New
#1
KB4023057 will not install on Windows 10 20H2
Attempts to install KB4023057 on 22Feb2021 on Windows 10 20H2 results in error code 0xc1900401. Troubleshooting Windows update does not reveal let alone resolve the problem. I have run system file check and corruptions were resolved but the update still cannot be installed.
I have also run DISM.exe without success:-
DISM.exe /Online /Cleanup-image /Restorehealth
DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows /LimitAccess (where repair source is folder 'source' on the Windows 10 20H2 installation USB.
Result zilch for all the above.