If you are unable to run the tool due to system errors (like error code 0x800704ec ), use the Elevated Command Prompt to repair system files: Search for in the Start menu. Select Run as administrator .
Calling getuid -style functions without full elevation will either: getuidx64 require administrator privileges exclusive
When getuidx64 executes, it often attempts to: If you are unable to run the tool
| Bad Practice (Causes Error) | Good Practice (No Exclusive Needed) | | :--- | :--- | | Call raw getuidx64 expecting POSIX behavior. | Use GetCurrentProcessId() or GetProcessIdOfThread() . | | Try to open \\.\PhysicalDrive0 directly. | Use volume handles ( \\.\C: ) or WMI queries. | | Require SeDebugPrivilege for all features. | Use AdjustTokenPrivileges only when needed, and degrade gracefully. | | Assume admin == root. | Check for IsUserAnAdmin() (shell32) or TokenElevationTypeFull . | | Use GetCurrentProcessId() or GetProcessIdOfThread()
return 0;
Here is an example of how getuidx64 might be used in a C program: