If SFC finds errors it can’t fix, the Windows system image itself may be damaged.
If your current system files are damaged, they may interfere with the installer's ability to load required libraries. Open as Administrator. Type sfc /scannow and hit Enter. could not load required file winsetup dll 0xc1 verified
Are you trying to Windows or upgrade an existing version? If SFC finds errors it can’t fix, the
DISM /Online /Cleanup-Image /RestoreHealth could not load required file winsetup dll 0xc1 verified
cd C:\Windows\System32 regsvr32 /u winsetup.dll regsvr32 winsetup.dll
Winsetup.dll is a dynamic link library (DLL) file that plays a crucial role in the Windows operating system, particularly during the installation process. It contains essential functions and resources required for setting up Windows or running certain applications.