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0x8000FFFF

Windows Update error 0x8000FFFF

Additional symptoms:

  • sfc /scannow stuck at 7% and cannot complete.
  • mmc.exe - app locked
  • Able to run mmc.exe fr

Solutions:

  • bitsadmin.exe /reset /allusers
  • chkdks /r
  • ICACLS C:\Windows\winsxs

Anty malware tools: