To resolve the "IHV GUI MUI 64 Access Denied" error, follow these troubleshooting steps:
Windows includes a built-in tool that can automatically fix permission issues. ihv gui mui 64 access denied
If you are writing a script or application and getting this error, do not try to force access to protected system files. Instead, use the appropriate Windows API calls to retrieve MUI strings, or ensure your application is running with elevated privileges (Administrator) only if absolutely necessary. To resolve the "IHV GUI MUI 64 Access