System File Checker errors reported... Solved

  1. Posts : 38
    Windows 10 Pro 64-bit 1903 18362.356

    System File Checker errors reported...

    I occasionally run Windows System File Checker (sfc /scannow) and for the first time, it's reported some errors.

    I've no idea how to interpret the results from the CBS.log, which I've attached, and wondered if someone could take a glance and enlighten me, please?

    Thank you.Attachment 239923
      My ComputerSystem Spec

  2. Brink's Avatar
    Posts : 42,182
    64-bit Windows 10 Pro for Workstations build 18980

    Hello Peter,

    When SFC cannot fix a system file, you can try running the DISM command show under step 4 option 3 below to repair the component store, and then try the SFC command again afterwards.

    Run SFC Command in Windows 10
      My ComputersSystem Spec

  3. Try3's Avatar
    Posts : 2,458
    Windows 10 Home x64 and Pro x86


    The problem is caused by a platform update to Windows defender and others are suffering the same problem. You can ignore it and let MS get around to fixing it sometime or you can use some of the guidance in these TenForums threads in an attempt to fix the problem yourself -

    sfc -scannow failing after this latest Defender Platfom update - TenForums
    SFC and DISM error when trying to fix corrupt windows files - TenForums
    [this thread - System File Checker errors reported - TenForums]
    and others with some info about this problem
    Cumulative Update KB4507453 Windows 10 v1903 build 18362.239 - July 9 Windows Update - TenForums
    sfc -scannow found corrupted file that could not be corrected - TenForums

    My attempts to fix the problem failed so I am just living with the problem.

    By the way, if you ever need to post about an SFC problem again in the future, use the guidance in the tutorial Brink linked you to so that you do not post the entire cbs.log.
    - I found what I needed in your cbs.log only because I guessed [correctly] what the problem was.
    - In normal circumstances, I would not have been able to guess and would just have given up when I saw you'd posted the whole thing.
    - You can even go further than Brink suggests and extract only the lines listing irreparable items using this command
    findstr.exe /c:"[SR] Cannot repair member file" %windir%\Logs\CBS\CBS.log >{{A path of your own choosing to wherever you want the results to be saved}}\SFCResults-Unrepairables.Log"

    such as, using an example path D:\Desktop for simplicity,
    findstr.exe /c:"[SR] Cannot repair member file" %windir%\Logs\CBS\CBS.log >D:\Desktop\SFCResults-Unrepairables.Log"

    Last edited by Try3; 11 Jul 2019 at 10:45.
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  4. NMI's Avatar
    Posts : 236
    Windows 10 Pro, Version 1903

    Your CBS.log shows hash mismatches for Windows Defender PowerShell files, which is a common/current issue.

    See sfc /scannow failing after this latest Defender Platfom update

    I just fixed mine as recommended above by Brink.

    (Reply composed before Denis's reply.)
      My ComputerSystem Spec

  5. Posts : 38
    Windows 10 Pro 64-bit 1903 18362.356
    Thread Starter

    I ran the DISM commands, re-ran SFC and it reported that it had found and corrected the errors.

    Thank you all.
      My ComputerSystem Spec

  6. Brink's Avatar
    Posts : 42,182
    64-bit Windows 10 Pro for Workstations build 18980

    Great news.
      My ComputersSystem Spec

  7. Steve C's Avatar
    Posts : 4,109
    Windows 10 Pro 64 bit

    Due to lousy Microsoft software QA yet again.
      My ComputersSystem Spec


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