Latest maintainer comment ·
kisak-valve · 2026-08-27 ·
#10097`Unhandled exception: unimplemented function ntoskrnl.exe.KeAcquireGuardedMutex called in 64-bit code (0x006ffffff9c200).` in your Proton log hints towards, https://github.com/ValveSoftware/Proton/issues/9331, but there's also a lot of access violations (c0000005) in EndfieldBase.dll before that which might be more important.