Quick Answer

✅ The Medium fullscreen not working is usually caused by display settings, outdated GPU drivers, or Windows compatibility issues. Here are the fastest fixes:

✅ Alt+Enter — Toggle fullscreen mode instantly while in-game.

✅ Set display resolution — Match your in-game resolution to your monitor’s native resolution.

✅ Update GPU drivers — Download the latest drivers from NVIDIA, AMD, or Intel.

✅ Run as administrator — Right-click the game executable and select “Run as administrator”.

✅ Disable fullscreen optimizations — Right-click the .exe Properties Compatibility check “Disable fullscreen optimizations”.

Most fullscreen issues in The Medium are resolved by updating graphics drivers and disabling Windows fullscreen optimizations. If the problem persists, try the advanced fixes below.

Key Takeaways

• ✅ The Medium fullscreen issues are commonly caused by GPU driver conflicts and Windows display settings
• ✅ Alt+Enter is the fastest way to toggle fullscreen mode in most PC games
• ✅ Matching in-game resolution to your monitor’s native resolution prevents most display problems
• ✅ Disabling fullscreen optimizations in Windows compatibility settings fixes many fullscreen bugs
• ✅ Running the game as administrator can resolve permission-related display issues
• ✅ Borderless windowed mode is a reliable alternative if exclusive fullscreen fails
• ✅ The Medium uses Unreal Engine 4, which has known fullscreen handling quirks on some systems
• ✅ Verifying game files through Steam can fix corrupted display configuration files
• ✅ Overlay software (Discord, Steam, GeForce Experience) can interfere with fullscreen mode
• ✅ A clean GPU driver installation using DDU often resolves stubborn fullscreen issues

Understanding the Fullscreen Problem in The Medium

The Medium is a psychological horror game developed by Bloober Team that uses Unreal Engine 4.

The game features a unique dual-reality gameplay mechanic where players navigate two worlds simultaneously.

This demanding rendering approach can cause display issues on certain hardware configurations, particularly when the game fails to properly negotiate fullscreen mode with the operating system.

Fullscreen issues in The Medium typically manifest in several ways. The game may launch in windowed mode despite being set to fullscreen.

It may display a black screen when alt-tabbing. The image may appear stretched or cropped. In some cases, the game crashes entirely when attempting to switch to fullscreen.

The root cause of most fullscreen problems is a conflict between the game’s rendering engine and the Windows display compositor.

Windows 10 and 11 use Desktop Window Manager (DWM) to composite all on-screen content.

When a game requests exclusive fullscreen access, DWM must release control of the display. If another application or system process holds a display lock, the fullscreen request fails silently.

Quick Fixes to Try First

Use Alt+Enter to Toggle Fullscreen

The simplest and fastest fix for fullscreen issues in The Medium is to use the Alt+Enter keyboard shortcut.

This Windows-standard command toggles between windowed and fullscreen modes in most PC games.

While the game is running, press Alt+Enter on your keyboard. The game should immediately switch to fullscreen mode.

If it was already in fullscreen, it will switch to windowed mode. Press the combination again to toggle back.

If Alt+Enter does not work, the game may have captured the keyboard input differently.

Try clicking on the game window first to ensure it has focus, then press Alt+Enter. On some keyboards, particularly laptops, you may need to hold the Fn key as well.

Match In-Game Resolution to Monitor Native Resolution

Mismatched resolutions are one of the most common causes of fullscreen display problems.

When the game renders at a different resolution than your monitor’s native resolution, the image may appear stretched, cropped, or fail to fill the entire screen.

Open The Medium’s graphics settings and check the current resolution.

Compare this to your monitor’s native resolution, which you can find in Windows by right-clicking the desktop and selecting Display settings.

Look for the “Resolution” dropdown — the recommended option is your native resolution.

Set the in-game resolution to match your monitor’s native resolution exactly.

For most modern monitors, this is 1920×1080 (1080p), 2560×1440 (1440p), or 3840×2160 (4K). After changing the resolution, apply the settings and restart the game.

Update Your GPU Drivers

Outdated graphics drivers are a leading cause of fullscreen and display issues in PC games.

GPU manufacturers regularly release driver updates that fix compatibility issues with new games and improve performance.

For NVIDIA users, visit nvidia.com and enter your GPU model to find the latest driver. Alternatively, use the GeForce Experience app to check for updates automatically.

For AMD users, visit amd.com/support and select your graphics card to download the latest driver. The AMD Radeon Software app can also check for updates.

For Intel integrated graphics, visit Intel’s download center to find the latest driver for your integrated GPU.

After installing the new driver, restart your computer before launching The Medium again.

A restart ensures the new driver is fully loaded and replaces any corrupted files from the previous installation.

Advanced Fixes for Persistent Fullscreen Issues

Disable Fullscreen Optimizations in Windows

Windows 10 and 11 include a feature called “fullscreen optimizations” that is designed to improve performance when running games in fullscreen mode.

However, this feature can actually cause fullscreen issues in some games, including The Medium.

To disable fullscreen optimizations, navigate to The Medium’s installation folder.

For Steam users, this is typically at C:\Program Files (x86)\Steam\steamapps\common\The Medium. Find the game’s executable file, typically named TheMedium.exe.

Right-click the executable and select Properties. Go to the Compatibility tab. Check the box labeled “Disable fullscreen optimizations”.

Click Apply and then OK. Launch the game and check if the fullscreen issue is resolved.

This fix works because it prevents Windows from intercepting the game’s fullscreen requests and applying its own compositor logic.

The game gets direct access to the display, which eliminates the conflict that causes fullscreen failures.

Run the Game as Administrator

Permission issues can prevent The Medium from accessing the display hardware in fullscreen mode.

Running the game with administrator privileges grants it the necessary permissions to control the display output directly.

Right-click the game’s executable or its Steam shortcut and select “Run as administrator”.

If this fixes the issue, you can set it to always run as administrator by right-clicking the executable, going to Properties Compatibility, and checking “Run this program as an administrator”.

Note that running as administrator may trigger a User Account Control (UAC) prompt each time you launch the game.

This is normal and expected behavior when an application requests elevated privileges.

Switch to Borderless Windowed Mode

If exclusive fullscreen continues to fail, borderless windowed mode is an excellent alternative.

Borderless windowed mode makes the game appear fullscreen while technically running in a window. This avoids the display handoff issues that cause exclusive fullscreen to fail.

In The Medium’s graphics or display settings, look for the display mode option. Change it from “Fullscreen” to “Borderless Windowed” or “Windowed Borderless”.

The game should now fill your entire screen without the black screen or windowed border issues.

The trade-off is a very small performance decrease, typically 1-3% fewer frames per second, because the Windows compositor is still active.

However, borderless windowed mode allows seamless alt-tabbing and is generally more stable than exclusive fullscreen on Windows 10 and 11.

Disable Overlay Software

Overlay software from Discord, Steam, GeForce Experience, and other applications can interfere with fullscreen rendering.

These overlays inject their own rendering layer into the game, which can conflict with the game’s fullscreen mode.

For Steam Overlay, right-click The Medium in your Steam library Properties uncheck “Enable the Steam Overlay while in-game”.

For Discord Overlay, open Discord Settings Game Overlay toggle off “Enable in-game overlay”.

For GeForce Experience Overlay, open GeForce Experience Settings General toggle off “In-Game Overlay”.

For Xbox Game Bar, press Windows+G to open Game Bar Settings disable the Game Bar options. Alternatively, disable it entirely in Windows Settings Gaming Xbox Game Bar.

After disabling all overlays, restart The Medium and test fullscreen mode. If the issue is resolved, you can re-enable overlays one at a time to identify which one was causing the conflict.

Verify Game Files Through Steam

Corrupted or missing game files can cause a wide range of issues, including fullscreen display problems.

Steam has a built-in tool that checks all game files against the server and replaces any that are corrupted or missing.

Open Steam and go to your Library. Right-click The Medium and select Properties.

Go to the Local Files tab and click “Verify integrity of game files”. Steam will scan all files and download replacements for any that do not match the expected versions.

This process can take several minutes depending on your internet speed. The Medium is approximately 30 GB, so verification may take 5-15 minutes.

After verification completes, launch the game and test fullscreen mode.

Perform a Clean GPU Driver Installation with DDU

If standard driver updates do not resolve the issue, a clean driver installation using Display Driver Uninstaller (DDU) may be necessary.

DDU completely removes all traces of your current GPU driver, including registry entries and leftover files that can cause conflicts.

Download DDU from Guru3D. Download the latest GPU driver from your manufacturer’s website but do not install it yet.

Disconnect from the internet to prevent Windows from automatically installing a generic driver.

Boot Windows into Safe Mode. Run DDU and select your GPU type (NVIDIA, AMD, or Intel). Click “Clean and restart”.

After the restart, install the GPU driver you downloaded earlier. Reconnect to the internet and restart one more time.

This process eliminates any driver corruption or conflicts that may have accumulated over time.

A clean driver installation fixes fullscreen issues in a significant number of cases where standard updates fail.

The Medium-Specific Fixes

Edit the Game Configuration File

The Medium stores its display settings in a configuration file that can be manually edited. This is useful when the in-game settings menu does not properly apply fullscreen changes.

Navigate to the game’s configuration folder. For Steam users, this is typically at C:\Users\[YourUsername]\AppData\Local\TheMedium\Saved\Config\WindowsNoEditor\.

Open the file GameUserSettings.ini in a text editor like Notepad.

Look for the FullscreenMode setting and change it to FullscreenMode=1 for exclusive fullscreen, or FullscreenMode=2 for borderless windowed.

Also check ResolutionSizeX and ResolutionSizeY values and set them to match your monitor’s native resolution.

Save the file and set it to read-only by right-clicking Properties check “Read-only”. Launch The Medium and verify the fullscreen setting is applied.

Disable Ray Tracing and Reduce Graphics Settings

The Medium features ray tracing and other advanced graphics options that can cause display issues on hardware that does not fully support these features.

If your GPU does not support ray tracing, having it enabled can cause fullscreen failures and crashes.

In The Medium’s graphics settings, disable Ray Tracing and DLSS if they are enabled.

Set the overall graphics quality to Medium or Low as a test. Disable V-Sync temporarily to see if it is causing the fullscreen issue.

After disabling these features, test fullscreen mode. If it works, you can gradually re-enable features one at a time to identify which one is causing the problem.

Check for Windows Display Scaling Issues

Windows display scaling can interfere with fullscreen games, particularly on high-DPI monitors.

If your display scaling is set to anything other than 100%, The Medium may not render correctly in fullscreen mode.

Right-click the desktop and select Display settings. Under Scale and layout, check the current scaling percentage. If it is set to 125%, 150%, or higher, this could be causing the fullscreen issue.

You can override the scaling behavior for The Medium specifically.

Right-click the game’s executable Properties Compatibility Change high DPI settings check “Override high DPI scaling behavior” and set it to “Application”.

System Requirements for The Medium

Ensuring your system meets the minimum requirements for The Medium is important for proper fullscreen functionality.

Running the game on hardware below the minimum specs can cause display issues including fullscreen failures.

Component	Minimum	Recommended
OS	Windows 10 64-bit	Windows 10/11 64-bit
CPU	Intel Core i5-6600 / AMD Ryzen 5 2600	Intel Core i7-10700 / AMD Ryzen 7 3700X
RAM	8 GB	16 GB
GPU	NVIDIA GTX 1060 6GB / AMD RX 580	NVIDIA RTX 2070 / AMD RX 6700 XT
Storage	30 GB available	30 GB SSD recommended
DirectX	Version 12	Version 12

If your system is near the minimum requirements, running the game at lower resolutions and graphics settings may be necessary for stable fullscreen operation.

Performance Tips for Smooth Fullscreen Gaming

Even after fixing the fullscreen issue, you may want to optimize The Medium’s performance for the best possible experience. Close unnecessary background applications before launching the game.

Web browsers, streaming software, and other GPU-accelerated applications consume resources that The Medium needs for smooth rendering.

Set your Windows power plan to High Performance or Ultimate Performance.

This prevents the CPU and GPU from throttling down during gameplay, which can cause frame drops and display issues. Go to Control Panel Power Options and select the appropriate plan.

If you have an NVIDIA GPU, open the NVIDIA Control Panel and set Power management mode to “Prefer maximum performance” for The Medium.

For AMD users, set the power profile to “High Performance” in Radeon Software.

Keep your Windows installation up to date. Microsoft regularly releases updates that improve display handling, GPU scheduling, and game compatibility.

Go to Settings Windows Update and install any available updates.

Understanding Exclusive Fullscreen vs Borderless Windowed

Before diving into specific fixes, it is important to understand the difference between exclusive fullscreen and borderless windowed mode.

These two display modes work very differently at the operating system level, and understanding their differences helps explain why some fixes work for one mode but not the other.

Exclusive fullscreen mode gives the game direct control of the display output. The Windows Desktop Window Manager (DWM) is bypassed entirely, and the game communicates directly with the GPU.

This results in the lowest possible input latency and often the highest frame rates.

However, exclusive fullscreen is more prone to conflicts with other applications and can cause black screens when alt-tabbing.

Borderless windowed mode runs the game in a window that happens to be the same size as the screen, with no visible borders or title bar.

The Windows compositor (DWM) is still active, which means alt-tabbing is instant and seamless.

The trade-off is slightly higher input latency and a small performance penalty, typically 1-3% fewer frames per second compared to exclusive fullscreen.

For The Medium specifically, borderless windowed mode is often the more stable option.

The game’s Unreal Engine 4 renderer handles borderless windowed well, and most players will not notice the small performance difference.

If you are experiencing persistent fullscreen issues, switching to borderless windowed is a practical and effective solution.

How Windows Game Mode Affects Fullscreen

Windows 10 and 11 include a feature called Game Mode that is designed to improve gaming performance by allocating more CPU and GPU resources to the active game.

While Game Mode can help in some scenarios, it can also interfere with fullscreen behavior in certain games.

Game Mode works by temporarily suspending background processes and reallocating system resources.

When a game requests exclusive fullscreen access, Game Mode may attempt to optimize the display handoff.

However, this optimization can sometimes conflict with the game’s own fullscreen handling, particularly in Unreal Engine 4 titles like The Medium.

To disable Game Mode, open Windows Settings and navigate to Gaming Game Mode. Toggle the Game Mode switch to Off.

Restart your computer and test The Medium in fullscreen mode. If the issue is resolved, you can leave Game Mode disabled or try re-enabling it after the game is running.

Note that disabling Game Mode may slightly affect performance in some games, but for The Medium, the difference is typically negligible.

The stability improvement from disabling Game Mode often outweighs any small performance loss.

Adjusting NVIDIA Control Panel Settings for The Medium

If you have an NVIDIA graphics card, the NVIDIA Control Panel offers several settings that can affect fullscreen behavior.

Adjusting these settings can resolve fullscreen issues that are not fixed by driver updates alone.

Open the NVIDIA Control Panel by right-clicking the desktop and selecting “NVIDIA Control Panel”.

Navigate to “Manage 3D settings” and click the “Program Settings” tab. Add The Medium to the list of programs by clicking “Add” and selecting the game’s executable.

Set “Power management mode” to “Prefer maximum performance”. This prevents the GPU from downclocking during gameplay, which can cause display instability in fullscreen mode.

Set “Vertical sync” to “Use the 3D application setting” to let the game control V-Sync behavior.

Set “Preferred refresh rate” to “Highest available” to ensure the game uses your monitor’s maximum refresh rate.

Set “Multi-display/mixed-GPU acceleration” to “Single display performance mode” if you have multiple monitors.

This prevents the GPU from splitting resources across displays, which can cause fullscreen issues.

Click “Apply” to save the changes. Launch The Medium and test fullscreen mode. These settings optimize the GPU for single-application fullscreen use and can resolve many display-related issues.

AMD Radeon Software Settings for Fullscreen Stability

AMD GPU users can also adjust settings in the Radeon Software application to improve fullscreen stability in The Medium.

AMD’s driver suite includes several options that directly affect how games handle fullscreen mode.

Open AMD Radeon Software by right-clicking the desktop and selecting “AMD Radeon Software”.

Navigate to the “Gaming” tab and find The Medium in the list of games. If it is not listed, click “Add” and browse to the game’s executable.

In the game profile, set “Wait for Vertical Refresh” to “Off, unless application specifies”. This lets the game control V-Sync behavior.

Set “Anti-Lag” to “Enabled” to reduce input latency in fullscreen mode. Set “Radeon Chill” to “Disabled” as it can cause frame rate fluctuations that affect fullscreen stability.

Set “Power Tuning” to “Maximized” to ensure the GPU runs at full clock speeds during gameplay.

Set “GPU Workload” to “Graphics” if it is set to “Compute”. These settings ensure the GPU is optimized for gaming rather than compute workloads.

Save the changes and launch The Medium. Test fullscreen mode to see if the AMD-specific settings have resolved the issue.

Intel Integrated Graphics Fullscreen Fixes

If you are running The Medium on Intel integrated graphics, fullscreen issues are more common due to the limited capabilities of integrated GPUs.

However, several Intel-specific settings can help improve fullscreen stability.

Open the Intel Graphics Command Center by right-clicking the desktop and selecting “Intel Graphics Settings” or “Intel Graphics Command Center”.

Navigate to the “System” or “Display” settings and check the current resolution and refresh rate.

Ensure the display is set to its native resolution and maximum refresh rate.

Intel integrated graphics sometimes default to lower refresh rates, which can cause fullscreen games to display incorrectly.

Set the scaling to “Maintain display scaling” to prevent the image from being stretched or cropped.

In the game-specific settings for The Medium, set “Vertical Sync” to “Application Controlled”. Set “Power Plan” to “Maximum Performance”.

Set “Anisotropic Filtering” to “Application Controlled”. These settings ensure the integrated GPU is not overriding the game’s display preferences.

Intel integrated graphics may struggle with The Medium at higher settings. If fullscreen issues persist, try reducing the in-game resolution to 720p and setting all graphics options to Low.

This reduces the load on the integrated GPU and can help stabilize fullscreen rendering.

Checking for Conflicting Background Applications

Many background applications can interfere with fullscreen gaming.

Beyond overlay software, other types of applications can cause display conflicts that prevent The Medium from entering fullscreen mode properly.

Screen recording and streaming software such as OBS, XSplit, and ShadowPlay can conflict with fullscreen rendering.

These applications hook into the game’s rendering pipeline to capture video, which can interfere with the fullscreen handoff. Try closing these applications before launching The Medium.

Remote desktop applications like TeamViewer, AnyDesk, and Chrome Remote Desktop can also cause fullscreen issues.

These applications install virtual display drivers that can confuse the game’s fullscreen detection. Close any remote desktop software before playing.

Antivirus and security software can sometimes interfere with fullscreen mode by blocking the game’s access to display hardware.

Add The Medium’s executable and installation folder to your antivirus software’s exception list. This prevents real-time scanning from interrupting the game’s display operations.

To identify which application is causing the conflict, try a clean boot. Press Windows+R, type “msconfig”, and press Enter.

Go to the “Services” tab, check “Hide all Microsoft services”, and click “Disable all”.

Go to the “Startup” tab and click “Open Task Manager”. Disable all startup items. Restart your computer and test The Medium in fullscreen mode.

Understanding The Medium’s Rendering Pipeline

The Medium uses Unreal Engine 4, which has a specific rendering pipeline that can cause fullscreen issues on certain hardware configurations.

Understanding how the engine handles display output can help you choose the right fix for your specific situation.

Unreal Engine 4 uses a deferred rendering pipeline that renders the scene in multiple passes. For The Medium, this is particularly demanding because the game renders two separate realities simultaneously — the physical world and the spirit world. Each reality requires its own rendering pass, effectively doubling the GPU workload.

The engine’s fullscreen implementation uses the RHI (Rendering Hardware Interface) layer to communicate with the GPU driver.

If the GPU driver does not properly support the RHI calls that The Medium makes, fullscreen mode can fail.

This is why updating GPU drivers is often the most effective fix — newer drivers include better RHI support.

The Medium also uses temporal anti-aliasing (TAA) and screen-space reflections, which are rendered at a lower resolution and then upscaled.

If the upscaling process conflicts with the display’s native resolution, the image may appear blurry or fail to fill the screen properly in fullscreen mode.

Disabling TAA in the game settings can sometimes resolve this issue.

Using Launch Options to Force Fullscreen

Steam allows you to add launch options to games that modify how they start. For The Medium, several launch options can force fullscreen mode or bypass common display issues.

Open Steam and go to your Library. Right-click The Medium and select “Properties”. In the “General” tab, find the “Launch Options” field. Add any of the following options:

-fullscreen — Forces the game to launch in exclusive fullscreen mode. This overrides any in-game display settings and forces the game to request exclusive fullscreen access from Windows.

-windowed -noborder — Forces the game to launch in borderless windowed mode. This is useful if exclusive fullscreen is not working but you want a fullscreen-like experience without borders.

-resx=1920 -resy=1080 — Forces a specific resolution. Replace 1920 and 1080 with your monitor’s native resolution. This ensures the game renders at the correct resolution from the moment it launches.

-dx11 — Forces the game to use DirectX 11 instead of DirectX 12.

Some fullscreen issues are caused by DX12 driver bugs, and switching to DX11 can resolve them. Note that this may disable some advanced graphics features.

You can combine multiple launch options in a single line, separated by spaces. For example: -fullscreen -resx=1920 -resy=1080 -dx11

When to Contact Bloober Team Support

If you have tried all the fixes above and The Medium still does not work in fullscreen mode, the issue may be a bug that requires a patch from the developer.

Bloober Team is generally responsive to bug reports and may be able to provide a solution.

Before contacting support, gather the following information: your GPU model and driver version, your Windows version (run “winver” in the Start menu), your monitor model and resolution, and a description of the specific fullscreen issue you are experiencing. Include any error messages or crash logs if available.

You can contact Bloober Team through their official website or through the game’s Steam community hub.

The Steam community hub is often the fastest way to get help, as other players may have experienced the same issue and found a solution that works.

Check the game’s Steam discussion forums for existing threads about fullscreen issues. Search for “fullscreen” or “display” in the discussions.

If you find a thread that matches your issue, add your experience to help the developer identify the scope of the problem.

Frequently Asked Questions

Q: Why does The Medium keep launching in windowed mode instead of fullscreen?

A: This is usually caused by the game configuration file having the wrong FullscreenMode value. Navigate to the GameUserSettings.ini file and set FullscreenMode=1 for exclusive fullscreen.

Also check that your in-game display settings are set to Fullscreen and not Windowed or Borderless.

Q: Can I play The Medium in borderless windowed mode instead of fullscreen?

A: Yes, The Medium supports borderless windowed mode. In the game’s display settings, change the display mode to “Borderless Windowed”.

This mode provides a fullscreen-like experience with better alt-tab stability and fewer display conflicts.

Q: Does The Medium support ultrawide monitors for fullscreen?

A: The Medium has limited ultrawide monitor support. The game may display black bars on the sides of ultrawide monitors (21:9 aspect ratio).

Some users have reported success using Flawless Widescreen or similar tools to enable proper ultrawide fullscreen support.

Q: Why does my screen go black when I alt-tab out of The Medium in fullscreen?

A: This is a common issue with exclusive fullscreen mode. The game takes complete control of the display output, and alt-tabbing requires the display to switch back to the Windows compositor.

Switching to borderless windowed mode eliminates this issue entirely.

Q: Will updating Windows fix The Medium fullscreen issues?

A: Windows updates can fix fullscreen issues, particularly if the problem is related to the Desktop Window Manager or GPU scheduling.

However, updating Windows alone may not resolve all fullscreen problems. Combine Windows updates with GPU driver updates and the compatibility fixes described above for the best results.

Q: Does V-Sync affect fullscreen mode in The Medium?

A: V-Sync itself does not prevent fullscreen mode, but it can cause input lag and stuttering that may feel like a display issue.

If you experience problems with V-Sync enabled, try disabling it in the game settings and using your GPU driver’s V-Sync control instead.

Q: How do I fix fullscreen issues on a multi-monitor setup?

A: Multi-monitor setups can cause fullscreen issues if the game launches on the wrong display. Set your primary monitor in Windows Display Settings before launching the game.

You can also try disconnecting secondary monitors temporarily to test if they are causing the conflict.

What Is the Torchlight Infinite Windowed Mode Issue?

Torchlight Infinite is a free-to-play action RPG developed by Echtra Games and published by Perfect World Entertainment.

The game features fast-paced hack-and-slash combat, procedurally generated dungeons, and a diverse roster of playable heroes with unique skill trees.

Since its global launch, the game has attracted a dedicated player base across PC platforms.

However, a significant number of players have reported persistent issues with windowed mode not working properly.

The game may refuse to switch from fullscreen to windowed mode, get stuck in an incorrect display state, or render with visual artifacts when running in a window.

Some players report that the windowed mode setting in the options menu simply does not take effect after clicking Apply.

In more severe cases, attempting to switch display modes causes the game to crash to desktop or display a black screen that requires a forced shutdown through Task Manager.

These issues have been reported on both Windows 10 and Windows 11 systems, affecting players with NVIDIA, AMD, and Intel graphics hardware configurations.

The root causes vary but typically involve configuration file corruption, outdated or incompatible graphics driver versions, and conflicts with Windows display management features such as fullscreen optimizations and DPI scaling.

Third-party overlay applications can also interfere with the game display pipeline.

This comprehensive guide provides a complete set of proven fixes for the Torchlight Infinite windowed mode issue.

Each fix is explained in detail with step-by-step instructions. Follow them in order, testing the game after each one before proceeding to the next.

Quick Answer

✅ To fix Torchlight Infinite windowed mode issues, follow these steps in order:

1. Edit GameUserSettings.ini and set FullscreenMode=0 (windowed) or FullscreenMode=2 (borderless)
2. Update your graphics drivers to the latest version from the manufacturer website
3. Right-click the game executable, go to Properties > Compatibility, and enable Disable fullscreen optimizations
4. Add -windowed -resx=1920 -resy=1080 launch parameters to the game shortcut
5. Verify game files through the launcher to repair any corrupted configuration
6. Disable third-party overlays (Discord, Steam, GeForce Experience) that may interfere with display modes

✅ The configuration file edit (Step 1) resolves the issue for the majority of affected players.

✅ If that alone does not work, combining it with the compatibility settings and launch parameters should resolve the problem in nearly all cases.

Understanding Why Windowed Mode Fails in Torchlight Infinite

To effectively troubleshoot this issue, it helps to understand how Torchlight Infinite handles display modes at the engine level.

The game is built on a modified version of the Unreal Engine, which uses a configuration system that stores display preferences in an INI file rather than in the Windows registry or a proprietary settings database.

When you change the display mode in the game options menu, the engine writes the new setting to GameUserSettings.ini. However, several factors can prevent this from working correctly.

The game launcher may overwrite the file on startup with cached settings.

The file may have incorrect permission settings that prevent the engine from writing changes.

Or the engine may fail to apply the setting due to a conflict with the current display state or an active overlay.

Windows 10 and 11 introduce their own display management layer called fullscreen optimizations.

This feature attempts to improve the performance and behavior of fullscreen applications by handling their display output through a more efficient pipeline.

However, it can interfere with games that use older display mode switching methods, causing windowed mode requests to be ignored or overridden.

Modern GPUs also use driver-level features such as NVIDIA G-SYNC, AMD FreeSync, and variable refresh rate technology.

These features are designed primarily for fullscreen applications and can conflict with windowed mode, especially when the game engine does not properly handle the transition between display modes with these features active.

System Requirements and Display Compatibility

Before troubleshooting, verify that your system meets the minimum requirements for Torchlight Infinite.

The game requires Windows 7 or later (64-bit), a DirectX 11 compatible graphics card, at least 4GB of RAM, and approximately 10GB of free storage space on an SSD or HDD.

Display-related issues are more common on systems with multiple monitors, high-DPI displays (4K or higher), or non-standard aspect ratios such as ultrawide (21:9) or super ultrawide (32:9).

If you are using any of these configurations, additional troubleshooting steps covered in the advanced fixes section may be required.

Windowed mode issues are particularly prevalent on systems with display scaling set above 100%.

Windows uses DPI scaling to make text and UI elements larger on high-resolution displays, but this can cause games to miscalculate window dimensions.

Try setting your display scaling to 100% in Windows Settings > Display before launching the game.

Fix 1: Edit the Game Configuration File

The most effective and reliable fix for windowed mode issues is to manually edit the game configuration file.

This approach bypasses the in-game options menu entirely and directly sets the display mode at the engine level. It has the highest success rate of any fix for this specific issue.

Step 1: Navigate to the Torchlight Infinite configuration folder. The default location is: C:\Users\[YourUsername]\AppData\Local\TorchlightInfinite\Saved\Config\WindowsNoEditor\

Step 2: Locate the file named GameUserSettings.ini.

If you do not see it, make sure hidden folders are visible in File Explorer by going to View > Show > Hidden items in the File Explorer ribbon.

Step 3: Right-click GameUserSettings.ini and open it with Notepad or any plain text editor.

Look for the [SystemSettings] section header. If this section does not exist in the file, add it by typing [SystemSettings] on a new line at the end of the file.

Step 4: Under the SystemSettings section, add or modify these lines: FullscreenMode=0 for windowed mode, FullscreenMode=2 for borderless windowed mode.

Also set ResolutionSizeX=1920 and ResolutionSizeY=1080 for a standard 1080p window size.

Step 5: Save the file and close the text editor.

Then right-click the saved file, select Properties, and check the Read-only attribute box.

This is a critical step because it prevents the game launcher from overwriting your changes when the game starts.

Step 6: Launch the game and verify that windowed mode is active.

If the game still launches in fullscreen, try deleting the entire config folder and letting the game recreate it from scratch, then edit the newly created file before launching again.

Fix 2: Update Your Graphics Drivers

Outdated or corrupted graphics drivers are one of the most common causes of display mode issues in PC games.

Torchlight Infinite relies on DirectX 11 rendering, and older drivers may not handle windowed mode transitions correctly or may have known bugs that specifically affect display mode switching.

For NVIDIA GPU users, open the GeForce Experience application and click the Drivers tab at the top. If an update is available, click Download and then Express Installation.

Alternatively, visit nvidia.com/drivers and search for your specific GPU model to download the driver package directly. Always choose the Game Ready Driver over the Studio Driver for gaming.

For AMD GPU users, open the AMD Radeon Software application and check for updates in the Updates section accessible from the main dashboard.

You can also visit amd.com/support and use the auto-detect tool or manually select your GPU model to download the latest Adrenalin driver package.

For Intel integrated graphics users, visit the Intel Download Center at intel.com and search for your processor model.

Download and install the latest graphics driver package. Intel has significantly improved its integrated graphics drivers in recent years, so keeping them updated is especially important for gaming.

After installing any driver update, restart your computer completely.

A full restart is necessary to ensure the old driver is fully unloaded from memory and the new driver is properly initialized.

If updating does not help, try a clean installation using DDU (Display Driver Uninstaller) in Safe Mode to completely remove all traces of the old driver before installing the fresh one.

Fix 3: Run in Compatibility Mode and Disable Fullscreen Optimizations

Windows includes a compatibility mode feature that can resolve display issues caused by differences between how various Windows versions handle application rendering.

This is particularly effective for games built on older engine versions or engines that use legacy display APIs.

Step 1: Locate the Torchlight Infinite main executable file.

This is typically found in the game installation directory such as C:\Program Files\TorchlightInfinite\ or wherever the launcher installed the game.

The main executable is usually named TorchlightInfinite.exe or similar.

Step 2: Right-click the executable file and select Properties from the context menu. Navigate to the Compatibility tab at the top of the Properties window.

Step 3: Check the box labeled Run this program in compatibility mode for and select Windows 8 from the dropdown menu.

Windows 8 uses a display management approach that is more compatible with older and modified game engines.

Step 4: In the same Compatibility tab, find and check the box labeled Disable fullscreen optimizations.

This is the most important single setting for windowed mode issues.

It tells Windows to stop interfering with the game display mode and let the application handle it directly without OS-level intervention.

Step 5: Click Apply and then OK to save the changes.

Launch the game and test windowed mode from the in-game options menu.

If the game still does not switch to windowed mode, try selecting Windows 7 in the compatibility mode dropdown instead of Windows 8.

Fix 4: Disable Fullscreen Optimizations via Windows Registry

If the compatibility tab method does not resolve the issue, you can achieve the same result by modifying the Windows Registry directly.

This approach applies the setting at the system level and can be more reliable when individual application compatibility settings do not seem to take effect.

Step 1: Press the Windows key and R simultaneously to open the Run dialog box.

Type regedit in the text field and press Enter. If prompted by User Account Control, click Yes to allow the Registry Editor to make changes to your system.

Step 2: In the Registry Editor window, navigate to the following key using the folder tree in the left panel: HKEY_CURRENT_USER\System\GameConfigStore

Step 3: In the right panel, look for a value named GameDVR_FSEBehaviorMode.

If it already exists, double-click it and change its value data to 2.

If it does not exist, right-click in an empty area of the right panel, select New then DWORD (32-bit) Value, name it exactly GameDVR_FSEBehaviorMode, and set its value to 2.

Step 4: Similarly, look for or create a value named GameDVR_HonorUserFSEBehaviorMode and set its value to 1.

This paired setting tells Windows to honor the application preferred display mode rather than applying its own optimization behavior.

Step 5: Close the Registry Editor completely. Restart your computer for the changes to take full effect.

After restarting, launch Torchlight Infinite and test windowed mode from the options menu. The registry changes should override any conflicting Windows display management behavior.

Fix 5: Verify and Repair Game Files Through the Launcher

Corrupted or missing game files can cause a wide range of issues, including display mode problems.

The Torchlight Infinite launcher includes a built-in file verification tool that checks the integrity of all installed game files and automatically replaces any that are found to be corrupted or missing.

Step 1: Open the Torchlight Infinite launcher application.

Do not click the Play or Launch button yet.

Look for a settings icon, usually represented by a gear or cog symbol, typically located in the top-right corner or bottom-left area of the launcher window.

Step 2: In the settings or options menu, look for an option labeled Verify, Repair, Check Files, or Scan and Repair.

The exact wording may vary depending on which version of the launcher you are using. Click this option to begin the verification process.

Step 3: The launcher will begin scanning all game files and comparing their checksums against the server-side reference versions.

This process can take anywhere from a few minutes to over an hour depending on your internet connection speed and the total size of the game installation.

Step 4: If any corrupted, modified, or missing files are detected during the scan, the launcher will automatically download the correct versions and replace the affected files.

Once the verification and repair process is complete, close and restart the launcher, then try launching the game in windowed mode.

Fix 6: Force Windowed Mode via Command Line Parameters

Command line launch parameters provide a direct way to tell the game engine which display mode to use when starting up.

This method bypasses both the in-game settings menu and the configuration file, making it a powerful fallback when other fixes have not worked.

Step 1: Locate the Torchlight Infinite shortcut on your desktop or in the Start menu.

If you do not have a desktop shortcut, navigate to the game installation folder in File Explorer, right-click the main executable, and select Send to > Desktop (create shortcut).

Step 2: Right-click the shortcut and select Properties from the context menu. Make sure you are on the Shortcut tab, which should be the default tab that opens.

Step 3: In the Target field, you will see the path to the game executable enclosed in quotation marks.

Click at the end of this path, after the closing quotation mark, and add a space followed by: -windowed -resx=1920 -resy=1080

The complete Target field should look like this: “C:\Games\TorchlightInfinite\TorchlightInfinite.exe” -windowed -resx=1920 -resy=1080

Step 4: Click Apply and then OK to save the shortcut changes. Always launch the game using this modified shortcut.

The -windowed parameter forces the engine to initialize in windowed mode.

The -resx and -resy parameters set the window resolution to 1920×1080. Adjust these values to match your preferred window size.

Additional useful launch parameters include: -noborder which removes the window border for a pseudo-borderless experience, and -forcevulkan which forces the Vulkan graphics API instead of DirectX 11, which may resolve display issues on some hardware configurations.

Advanced Fix: Disable Third-Party Overlays That Interfere with Display Modes

Third-party overlay applications are a frequently overlooked cause of display mode conflicts in games.

Overlays work by injecting their own rendering layer into the game frame pipeline, which can interfere with how the game switches between fullscreen and windowed modes.

Discord Overlay: Open Discord and click the gear icon near your username to open User Settings. Scroll down to Game Overlay in the left sidebar menu.

Toggle Enable in-game overlay to the off position. This prevents Discord from injecting its overlay into Torchlight Infinite and other games.

Steam Overlay: If you added Torchlight Infinite to Steam as a non-Steam game, right-click it in your Steam library and select Properties.

In the General tab, uncheck the box labeled Enable the Steam Overlay while in-game.

NVIDIA GeForce Experience Overlay: Open the GeForce Experience application and click the Settings gear icon in the top-right corner.

Toggle In-Game Overlay to the off position. You can also press Alt+Z while in any game to access the overlay menu and disable it from there.

AMD Radeon Overlay: Open the AMD Radeon Software application, navigate to Settings, then General, and toggle In-Game Overlay to off.

Windows Game Bar: Open Windows Settings and navigate to Gaming > Game Bar.

Toggle Record game clips, screenshots, and broadcast using Game Bar to the off position. Alternatively, press Win+G during gameplay and disable it from the overlay menu.

After disabling all overlays, restart your computer to ensure all overlay processes are fully terminated.

Launch Torchlight Infinite and test windowed mode. If the issue is resolved, you can re-enable overlays one at a time to identify the specific one causing the conflict.

Advanced Fix: Resolve Multi-Monitor Display Conflicts

Multi-monitor setups are a common source of windowed mode issues in games.

When a game attempts to determine which monitor to display on and at what resolution, the presence of multiple monitors with different capabilities can cause confusion in the display mode switching process.

Step 1: Open Windows Settings and navigate to System > Display. You will see a visual representation of your connected monitors.

Identify which one is set as your main display, marked with the number 1. The game will typically try to use the main display for its initial rendering.

Step 2: If possible, temporarily disconnect secondary monitors from your graphics card. This eliminates any ambiguity about which display the game should target.

Launch the game and confirm that windowed mode works with only one monitor connected. Once confirmed, you can reconnect additional monitors.

Step 3: If disconnecting monitors is not a practical option, ensure all connected monitors are set to the same refresh rate.

Mismatched refresh rates are a common cause of display mode switching failures. In Display Settings, click each monitor and verify the refresh rate is consistent across all displays.

Step 4: Set your primary monitor to its native resolution before launching the game.

Running a monitor at a non-native resolution forces the GPU to scale the output, which can cause the game to miscalculate window dimensions when switching to windowed mode.

After the game is running in windowed mode, you can adjust the resolution as needed.

Advanced Fix: Fix DPI Scaling and High-Resolution Display Issues

Windows DPI scaling is designed to make text and UI elements readable on high-resolution displays, but it can cause significant issues with games running in windowed mode.

When scaling is set above 100%, Windows applies a transformation to application windows that can cause miscalculations in window sizing and positioning.

Step 1: Open Windows Settings and go to System > Display.

Under the Scale & Layout section, set the Change the size of text, apps, and other items dropdown to 100% (Recommended). You may need to sign out and sign back in for this change to take effect.

Step 2: For a targeted per-application fix that does not affect other programs, right-click the Torchlight Infinite executable and select Properties.

Go to the Compatibility tab and click the Change high DPI settings button at the bottom.

Step 3: In the High DPI Settings Override window that appears, check the box labeled Override high DPI scaling behavior.

In the dropdown menu below it, select Application. This tells Windows to let the game handle its own DPI scaling rather than applying the system-wide scaling factor.

Step 4: Click OK to close the DPI override window, then click Apply and OK in the Properties window.

Launch Torchlight Infinite and test windowed mode. The game should now handle its own scaling correctly without Windows interference.

Troubleshooting Specific Windowed Mode Scenarios

Some players experience specific variations of the windowed mode issue that require targeted solutions. Here are the most common scenarios and how to address them.

Game Ignores Windowed Setting After Update: Game updates often reset configuration files to default values.

After any Torchlight Infinite update, check your GameUserSettings.ini file to ensure FullscreenMode is still set to your preferred value.

If the file was replaced, you will need to edit it again and reapply the read-only attribute.

Windowed Mode Works but Resolution is Wrong: If the game switches to windowed mode but the window is the wrong size or positioned off-screen, edit the ResolutionSizeX and ResolutionSizeY values in GameUserSettings.ini.

For a 1080p window, use ResolutionSizeX=1920 and ResolutionSizeY=1080.

Black Screen When Switching to Windowed: A black screen during the display mode transition usually indicates the game is trying to use a resolution or refresh rate that your monitor does not support in windowed mode.

Boot the game in safe mode or delete the config file to reset to defaults, then set a supported resolution.

Game Minimizes When Switching to Windowed: This behavior typically indicates a conflict with another application that is forcing focus away from the game.

Close background applications one at a time to identify the culprit. Common offenders include chat applications, notification tools, and system monitoring software.

Understanding the Performance Impact of Display Modes

Running Torchlight Infinite in different display modes affects system performance in different ways.

Understanding these differences can help you choose the best mode for your hardware and play style.

Exclusive Fullscreen mode provides the best raw performance because the game takes direct control of the display output, bypassing the Windows Desktop Window Manager.

This reduces rendering latency and can provide measurably higher frame rates, particularly on lower-end hardware.

Windowed mode requires the Windows DWM to composite the game window with other desktop elements.

This adds a small amount of GPU overhead, typically resulting in a 1-5% reduction in frame rates compared to exclusive fullscreen.

On modern dedicated GPUs, this difference is generally imperceptible during normal gameplay.

Borderless Windowed mode renders the game in a borderless window that covers the entire screen.

The performance impact is similar to standard windowed mode, but the visual experience is nearly identical to fullscreen.

This mode is ideal if you frequently alt-tab between the game and other applications.

If you notice significant performance drops after switching to windowed mode, try these optimizations: close unnecessary background applications to free up CPU and GPU resources, set your Windows power plan to High Performance in Power Options, and disable Windows Game Mode which can sometimes cause more problems than it solves.

Key Takeaways

• ✅ Editing GameUserSettings.ini with FullscreenMode=0 or 2 is the single most effective fix for windowed mode issues
• ✅ Always set the config file to read-only after editing to prevent the launcher from overwriting your changes
• ✅ Disable fullscreen optimizations in the executable Compatibility tab for the most reliable Windows-level fix
• ✅ Update graphics drivers from the manufacturer website rather than relying on Windows Update
• ✅ Use -windowed -resx=1920 -resy=1080 launch parameters as a reliable fallback method
• ✅ Disable all third-party overlays before testing display mode changes to eliminate conflicts
• ✅ Multi-monitor setups are a common cause of issues test with a single monitor first
• ✅ Set Windows DPI scaling to 100% or use per-application DPI override for high-resolution displays
• ✅ Borderless windowed mode (FullscreenMode=2) offers the best balance of convenience and performance
• ✅ If all else fails, delete the entire Saved/Config folder and let the game recreate it from defaults

Frequently Asked Questions

Q: Why does Torchlight Infinite keep switching back to fullscreen after I set it to windowed mode?

This happens when the game launcher overwrites your GameUserSettings.ini file during startup.

The launcher caches its own settings and writes them to the config file each time it runs.

To prevent this, right-click the edited file, go to Properties, and check the Read-only box after making your changes.

Q: What is the difference between windowed, fullscreen, and borderless windowed mode?

Fullscreen mode gives the game exclusive control of your display output, providing the best performance and lowest input lag.

Windowed mode runs the game in a bordered window that can be resized and moved.

Borderless windowed mode runs the game in a full-screen-sized window without borders, combining the alt-tab convenience of windowed mode with the visual coverage of fullscreen.

Q: Can I play Torchlight Infinite in borderless windowed mode?

Yes.

Set FullscreenMode=2 in the GameUserSettings.ini file under the SystemSettings section.

Borderless windowed is often the recommended mode for most players because it provides a fullscreen-like experience while allowing instant alt-tab switching to other applications.

Q: Does windowed mode cause input lag in Torchlight Infinite?

Windowed mode can introduce a very small amount of additional input lag because the Windows compositor processes each frame before displaying it.

On modern systems with dedicated GPUs, this is typically less than 1ms and is imperceptible. If you are highly sensitive to input lag, use borderless windowed mode or exclusive fullscreen.

Q: My game crashes when I try to switch to windowed mode. How do I fix this?

A crash during display mode switching usually indicates a resolution or refresh rate mismatch.

The game may be trying to switch to a resolution your monitor does not support in windowed mode.

Reset your config file by deleting it, then set the resolution manually before attempting to switch modes.

Q: Will editing the configuration file get me banned from Torchlight Infinite?

No. Editing GameUserSettings.ini to change display settings only affects how the game renders on your local system.

It does not modify any game logic, provide competitive advantages, or interact with the anti-cheat system. This is a standard and safe troubleshooting procedure.

Q: I edited the config file but the game still launches in fullscreen. What should I check?

First, verify the file was saved to the correct location in the AppData folder. Second, confirm the Read-only attribute is set.

Third, check that the FullscreenMode line is placed under the correct section header. Finally, try using the -windowed launch parameter as a backup method.

Q: Do these fixes work on both Windows 10 and Windows 11?

Yes.

Every fix described in this guide works identically on both Windows 10 and Windows 11.

The configuration file format, compatibility settings, registry values, and launch parameters are all the same across both operating systems.

Q: Can I use these same fixes for other Torchlight games like Torchlight I or II?

Yes.

Torchlight and Torchlight II use similar Unreal Engine-based configuration systems.

The same approach of editing GameUserSettings.ini and setting FullscreenMode works for those games as well, though the exact config file path will be different based on the game installation.

Quick Answer

✅ The Helldivers 2 block list error prevents players from joining friends, seeing lobby invites, or matchmaking with specific players.

✅ This issue stems from the game’s internal block list system conflicting with Steam’s overlay, corrupted local profile data, or server-side account flags.

✅ The most effective fixes are: clearing the local Helldivers 2 profile data, verifying the block list on both Steam and in-game, disabling the Steam overlay temporarily, and ensuring your game is fully updated.

✅ Follow the step-by-step solutions below to resolve the block list error and get back into co-op missions with your squad.

✅ If you are unable to join a specific friend, the issue is almost always on one side’s block list either the in-game block list or the Steam-level block list.

✅ Both players should check their respective lists.

✅ If the problem persists after clearing both lists, the issue is likely a corrupted local save or a server-side desync that requires a full profile reset.

What Is the Helldivers 2 Block List Error?

The block list error in Helldivers 2 occurs when the game incorrectly flags a player as blocked, even when neither player has manually added the other to their block list.

This manifests in several ways: you cannot see your friend’s lobby, join requests fail silently, matchmaking refuses to pair you together, or you receive a generic “unable to connect” error when attempting to join a specific player.

This error became widespread after major patches that introduced changes to the game’s social and matchmaking systems.

Arrowhead Game Studios uses a combination of Steam’s networking layer and their own internal servers to manage player relationships, and when these two systems fall out of sync, block list errors occur.

The most common symptom is seeing a friend online in your Steam list, clicking “Join Game,” and receiving no response no error message, no connection attempt, just silence.

In other cases, the game displays a vague “Connection Failed” message that gives no indication the issue is related to the block list.

What Causes the Block List Error?

Several underlying causes can trigger the block list error in Helldivers 2.

How to Check Your In-Game Block List

Before applying any fixes, verify that the player you are trying to join is not actually on your in-game block list.

How to Check Your Steam Block List

Steam maintains its own independent block list that affects all games, including Helldivers 2.

Fix 1 Clear Local Helldivers 2 Profile Data

Corrupted local profile data is the most common cause of phantom block list entries.

Fix 2 Verify Game Files on Steam

Corrupted or missing game files can cause a wide range of issues, including social and matchmaking errors.

Fix 3 Disable and Re-Enable the Steam Overlay

The Steam overlay is responsible for handling friend invitations, join requests, and social features in Helldivers 2.

Fix 4 Reset Your Helldivers 2 Account Connection

If the block list error is caused by a server-side desync, you may need to reset your account’s connection to Arrowhead’s servers.

Fix 5 Check for Server Outages and Wait

Sometimes the block list error is not caused by anything on your end.

Fix 6 Reinstall Helldivers 2 (Last Resort)

If none of the above fixes work, a full reinstall of Helldivers 2 may be necessary.

How to Prevent Block List Errors in the Future

Preventing block list errors is easier than fixing them. Follow these best practices to minimize the chances of encountering this issue again.

Known Issues and Workarounds

Arrowhead has acknowledged several known issues related to the block list system in Helldivers 2. Here are the most common ones and their current workarounds.

Frequently Asked Questions

Q: Why can’t I join my friend’s game even though neither of us has blocked the other?

A: This is the classic phantom block list error. It is almost always caused by corrupted local profile data or a server-side desync.

Follow Fix 1 (clear local data) and Fix 4 (reset account connection) to resolve it.

Q: Does blocking someone in Helldivers 2 also block them on Steam?

A: No. The in-game block list and Steam’s block list are separate systems. Blocking someone in Helldivers 2 only affects your interactions within the game.

However, both block lists can independently prevent you from joining a player, so you need to check both.

Q: Can the block list error affect matchmaking with random players?

A: In rare cases, yes.

If your block list is corrupted and contains a large number of phantom entries, the game may refuse to match you with any player who appears on the corrupted list.

This can significantly reduce your available matchmaking pool. Clearing the block list usually resolves this.

Q: How many players can I have on my Helldivers 2 block list?

A: Helldivers 2 does not publicly document a hard limit for the block list.

However, having an excessively large block list (hundreds of entries) can cause performance issues and increase the likelihood of corruption.

Keep your block list to a reasonable size.

Q: Will clearing my local data delete my game progress?

A: No. Helldivers 2 stores your progression (warbonds, unlocks, ranks) on Arrowhead’s servers, not locally.

Clearing local profile data only affects your settings, keybindings, and social preferences. Your progress will be re-downloaded from the server when you log back in.

Q: Is the block list error related to the “Failed to Join” error?

A: They are related but distinct. The “Failed to Join” error is a general connection failure that can have many causes.

The block list error specifically prevents you from joining a particular player.

If you can join random players but not a specific friend, the issue is almost certainly block-list related.

Advanced Fix Delete the Steam Player Data Cache

Steam caches player data including block lists, friend relationships, and recent player history.

Advanced Fix Run Helldivers 2 as Administrator

If Helldivers 2 cannot write updated block list data to disk due to permission issues, your unblock actions may not persist between sessions.

Anti-Virus and Firewall Interference

Some anti-virus programs and firewalls interfere with Helldivers 2’s network traffic, which can cause social features to malfunction.

Controller and Input Device Related Block List Issues

While less common, some players have reported that input device conflicts can trigger social errors in Helldivers 2.

How Arrowhead’s Block List System Works

Understanding how Arrowhead’s block list system works under the hood can help you troubleshoot issues more effectively.

Contacting Arrowhead Support

If you have tried all the above fixes and the block list error persists, the issue may require direct intervention from Arrowhead’s support team.

Key Takeaways

• ✅ The Helldivers 2 block list error prevents joining specific friends and is caused by corrupted local data or server desync.
• ✅ Always check both the in-game block list AND the Steam block list they are separate systems.
• ✅ Clearing local profile data at AppData\Roaming\Arrowhead\Helldivers2\ fixes most phantom block list issues.
• ✅ Verifying game files on Steam resolves issues caused by corrupted installation data.
• ✅ Disabling and re-enabling the Steam overlay can fix social feature malfunctions.
• ✅ Server-side desync may require unlinking and re-linking your Arrowhead account.
• ✅ Always exit the game properly to prevent profile data corruption.
• ✅ Check for server outages before spending time on client-side fixes.