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How to repair Windows 8/8.1 if system files are corrupted

APPLIES TO:
  • Parallels Desktop

Symptoms

Windows® 8/8.1 system files are corrupted.

Cause

Windows files corruption may have several causes, for instance, incorrectly installed Windows updates.

Resolution

  1. Open the Start menu, type in 'cmd' (Command Prompt) without quotes, right-click on the application and choose Run as Administrator.
  2. In Command Prompt type in:

    sfc /scannow    (hit Return/Enter)
    

    and wait until the operation is completed.

  3. If you see the message Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log. Note that logging is currently not supported in offline servicing scenarios, please proceed to the next step.

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  4. Make sure that your Windows 8/8.1 virtual machine is connected to the Internet.

  5. In Command Prompt type in:

    DISM /Online /Cleanup-Image /RestoreHealth    (hit Return/Enter)
    

    If you have Windows installation media (CD/DVD disk or an .iso disk image), please type in:

    DISM /Online /Cleanup-Image /RestoreHealth /source:wim:D:\sources\install.wim:1 /limitaccess
    

    where D: is the Windows installation image mounted in a virtual drive.

    Wait until the operation is completed. This usually takes 20-30 minutes.

  6. Restart the virtual machine.

Search words:

Windows 8/8.1

sfc /scannow

system files are corrupted

PD




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