League of Legends Won’t Go Full Screen? Here’s How to Fix It

If League of Legends won’t go full screen, the game may launch in windowed or borderless mode despite selecting full screen in settings. This display issue is common after patches, driver changes, or DPI scaling conflicts. Follow these quick steps to restore proper LoL full screen mode on Windows 10 or 11.

What can I do if League of Legends won’t go full screen?

1. Use the LoL Windowed Mode

1. Press on the Esc key to open the Settings window.
2. Select the Video tab, click on the Windowed Mode dropdown box, then select Full Screen.
3. Wait a moment until the changes are adjusted.
4. Confirm the action.

NOTE

The same procedure applies if you happen to experience League of Legends dual monitor issues.

2. Try the Window Size option

1. Click on the Settings icon.
2. From the left side, select the General tab.
3. Look on the right side, and click on the box below Window Size. Note that this would be set on a lower resolution.
4. Scroll down in the list below, then select the last and largest screen resolution available, which is 1920×1080.
5. Click on Done to save the changes.

This may also help when League of Legends won’t start at all.

3. Use the LoL troubleshooter

1. Click on the Settings icon.
2. Select the General tab.
3. Scroll down to Troubleshooting, then select Initiate Full Repair.
4. Proceed with the on-screen instructions.
5. League of Legends will be repaired and should work in normal conditions.

4. Uninstall and reinstall the game

Uninstall League of Legends

1. Open Settings.
2. Go to Apps.
3. On the left side, select Apps & features.
4. On the right side, scroll down to the Search this list bar, then type the game’s name.
5. Locate and select your game, then click on Uninstall.

Reinstall the game

1. Open the RIOT support website.
2. Click on the Download for Windows button.
3. Follow the on-screen instructions to reinstall the game.

5. Use Alt + Enter to Toggle Full Screen

Launch League and press Alt + Enter during gameplay.

This keyboard shortcut switches between LoL windowed mode and full screen, and often resolves display lockups instantly.

This also helps prevent other display issues like the League of Legends black screen bug.

6. Disable Fullscreen Optimizations in Windows

1. Locate the LeagueClient executable file on your system.
2. Right-click it, go to Properties > Compatibility, and check Disable fullscreen optimizations.

3. Click Apply and relaunch the game.

7. Adjust Display Scaling to 100%

Open Display settings in Windows.
Under Scale and layout, set the scale to 100%.
Log out and back in before starting League again.

High-DPI scaling issues are common causes behind full screen problems and even FPS limits like being capped at 60.

8. Update Graphics Drivers

To rule out driver conflicts behind League of Legends full screen not working, try updating your GPU directly through Device Manager:

1. Right-click the Start button and choose Device Manager
2. Expand the Display adapters section
3. Right-click your GPU (e.g., NVIDIA, AMD, Intel) and select Update driver
4. Choose Search automatically for drivers and follow the prompts
5. Restart your PC after installation completes

This method is quick, built into Windows, and often resolves rendering issues that also cause FPS caps or game crashes.

If Device Manager can’t find a new version, visit your GPU manufacturer’s site and install the latest driver manually. That often leads to smoother performance and fewer display bugs, especially after major game or OS updates.

9. Launch League in Compatibility Mode

1. Right-click the game shortcut and choose Properties.
2. Under the Compatibility tab, enable Run this program in compatibility mode and select Windows 8 or 7.
3. Click Apply and launch the game again.

This step has helped players facing persistent fullscreen bugs or DirectX errors in League.

Why Is League of Legends Not Going Full Screen?

Here are the most common reasons:

• Display mode set to borderless or windowed
• Windows fullscreen optimizations interfering
• Display scaling not at 100%
• Outdated or broken GPU drivers
• Compatibility issues with newer Windows versions

FAQs

If you ever encounter this trouble on other games, you can always check a full-fix guide about Windows games not being able to go fullscreen.

We hope the steps above helped you go fullscreen in League of Legends.

LoL players are familiar with other errors such as connection issues, FPS drops, and black screen after champion selection. With a few tricks, you can fix most of these issues.

For any other additional questions, feel free to leave a comment in the section below. We’ll make sure to quickly come up with the most useful feedback.