if %PROCESSOR_ARCHITECTURE% == AMD64 (
    set filename=%windir%\SysWOW64\gameux.dll
) else (
    set filename=%windir%\System32\gameux.dll
)

TAKEOWN /F %filename%
ICACLS %filename% /grant %USERNAME%:F
for /F %%i in ("%filename%") do set baseName=%%~nxi
ren %filename% %baseName%_

if %PROCESSOR_ARCHITECTURE% == AMD64 (
    set filename=%windir%\SysWOW64\GameUXLegacyGDFs.dll
) else (
    set filename=%windir%\System32\GameUXLegacyGDFs.dll
)

TAKEOWN /F %filename%
ICACLS %filename% /grant %USERNAME%:F
for /F %%i in ("%filename%") do set baseName=%%~nxi
ren %filename% %baseName%_