Windows 10: SFC errors - how to identify/fix?

  1.    14 Jul 2016 #1

    SFC errors - how to identify/fix?


    As one (not particularly hopeful) step in trouble-shooting a problem (Cortana not opening reliably) I used sfc /scannow from an elevated command. At its conclusion I got this 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."

    I opened that log file - but it's 52,000 lines long! How could a user be expected to isolate it from that? More important, what are suggested ways for me to proceed please? Apart from ignoring the unidentified problem(s).

    --
    Terry, East Grinstead, UK
      My ComputerSystem Spec

  2.    14 Jul 2016 #2

    Meanwhile I thought I'd search that huge log file for the string 'cannot repair' in my text editor. These were the only two lines, almost identical. Do they provide the experts with any clues I can pursue please?

    2016-07-14 16:07:10, Info CSI 00005561 [SR] Cannot
    repair member file [l:10]"opencl.dll" of microsoft-windows-RemoteFX-clientVM-RemoteFXWDDMDriver-WOW64-C, version 10.0.10586.0, arch Host= amd64 Guest= x86, nonSxS, pkt {l:8 b:31bf3856ad364e35} in the store, hash mismatch

    2016-07-14 16:07:10, Info CSI 0000555e [SR] Cannot repair member file [l:10]"opencl.dll" of microsoft-windows-RemoteFX-clientVM-RemoteFXWDDMDriver-WOW64-C, version 10.0.10586.0, arch Host= amd64 Guest= x86, nonSxS, pkt {l:8b:31bf3856ad364e35} in the store, hash mismatch

    Searching my OS drive I found three examples of the (implicated ?) file, all different sizes:

    OpenCLDLL C:\Windows\$ystem32 98 KB 17/06/2016 00:16

    opencl.dll
    C:\WindowsRWinSxSKamdf?evgwddmd?1.inf_31bf3856ad364e35_10.0.10586.0_none_5fcf238??52df0d7
    34 KB 13/02/2016 18:13

    opencl.dll
    C:\WindowskWinSxSRwow?Lmicrosoft-windows-r..mddmdriver-wow64-c_31bf3856ad364e35_10.0.10586.0_none_3dae054b56911c22
    102 KB 17/06/2016 00:16

    --
    Terry, East Grinstead, UK
      My ComputerSystem Spec


  3. Posts : 12,492
    Windows 10 Pro
       14 Jul 2016 #3

    Hi Terrypin,

    Welcome to the 10forums

    The opencl.dll is a known issue, kinda a bug with SFC, it is quite easy to resolve it but it is not harmful and does not affect anything on the system

    In many cases this issue starts due to driver updates from Nvidia, these driver updates replaces the opencl.dll from Windows with their own (newer) version.
    In other cases I'm not sure how it happens.
      My ComputersSystem Spec


  4. Posts : 2,036
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       14 Jul 2016 #4

    It's best to delete the CBS.log + Dism.log before running sfc or dism commands. Windows will create a brand new log file for each which contains only the latest error/problem.

    NOTE: CBS.log sometimes is locked by tiworker.exe process, you'd need to keep trying until it's deleted.
    Last edited by topgundcp; 14 Jul 2016 at 13:34.
      My ComputerSystem Spec

  5.    14 Jul 2016 #5

    Thanks both, appreciate those helpful (and rather reassuring!) replies.

    Terry, UK
      My ComputerSystem Spec


 

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