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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →You can’t currently choose a different DirectX version through a Riot-supported League of Legends setting. Riot requires DirectX 11 feature level 11_0 on Windows, and removed DirectX 9 support with Patch 14.9 on May 1, 2024. The old DX9 advice—and the beta-era DX11BetaTest=1 setting—does not provide a current supported way to switch versions.
What DirectX version does League of Legends require?
Riot’s current minimum requirements specify DirectX 11 feature level 11_0 for Windows. The requirement is for the graphics feature level, not simply the presence of a DirectX installation. Riot lists Metal for Mac instead of this Windows requirement. See Riot’s minimum and recommended system requirements.
Riot removed DirectX 9 support for League of Legends and Teamfight Tactics with Patch 14.9 on May 1, 2024. That change makes guides recommending a switch back to DX9 outdated. Riot’s crash troubleshooting guidance also notes that outdated DirectX can cause hardware-interaction problems, including driver crashes and input or audio failures.
Why the old DX11BetaTest setting is not a current switch
During the DX11 beta, Riot told testers to add DX11BetaTest=1 under [General] in game.cfg. The historical DX11 beta announcement also described removing the entry or setting it to 0 to check whether an issue was specific to DX11. That instruction belonged to beta testing; it is not evidence of a supported current DirectX selector. Editing the file does not restore DX9 support.
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What to do if League won’t launch or shows a DirectX error
First distinguish a graphics-capability limit from a software or driver problem. The right next step depends on whether the graphics hardware supports the required feature level and on the specific error shown.
Quick Recap
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If the hardware may not support feature level 11_0
- Check your graphics hardware and its supported DirectX feature levels against Riot’s Windows minimum requirements.
- If the capability is missing, a configuration edit cannot add it. Riot says affected players may need to update their hardware; the Play button may be greyed out with a message asking for a hardware update.
If the hardware meets the requirement
- Use the exact error message to guide troubleshooting rather than assuming a DirectX-version toggle will fix it.
- Check for relevant graphics-driver or system issues, since Riot identifies outdated DirectX as a possible cause of hardware-interaction problems.
- If you consider resetting settings, note that Riot’s minimum-settings-file procedure restores a bare-minimum configuration and replaces current in-game settings. It is a settings reset, not a DirectX-version change; follow the current instructions on Riot’s requirements page only if that reset is appropriate.
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