This is the most effective fix for most users. You can force a reinstallation using Windows PowerShell
Microsoft releases specific patches for Gaming Services. If you are on a 6-month-old version of Windows 11, the DLL version may be incompatible with your current OS build. xgameruntime.dll error code 126
Failed to Load xgameruntime.dll Error Code 126 in Windows 10/11 This is the most effective fix for most users
The most effective way to resolve this error is to force a reinstallation of Microsoft's Gaming Services using administrative commands. xgameruntime.dll error code 126
This is the single most effective fix for Code 126.
xgameruntime.dll is a Dynamic Link Library file developed by Microsoft Corporation. It is a core component of the on Windows 10 and Windows 11.