Windows 8 and 8.1 Forums


Unable to upgrade to 8.1 OxC1900101 - Ox4000D

  1. #1


    Posts : 9
    Windows 8

    Unable to upgrade to 8.1 OxC1900101 - Ox4000D


    I have tried 3 times to the update my desktop to 8.1 but always get the same message:

    "Sorrywe couldn't complete the update to 8.1. We restored your previous version ofWindows to this PC"
    OxC1900101- Ox4000D

    What should I do?


      My System SpecsSystem Spec

  2. #2


    United States
    Posts : 3,093
    Windows 8.1 Pro 64-bit


    First, make sure you have all updates for 7 installed.

    Also, run sfc /scannow in elevated command prompt to be sure you have no system file corruptions.
      My System SpecsSystem Spec

  3. #3


    Posts : 9
    Windows 8


    I want to upgrade from Windows 8 to 8.1
      My System SpecsSystem Spec

  4. #4


    United States
    Posts : 3,093
    Windows 8.1 Pro 64-bit


    You show 7 in specs. Same answer if you have 8 installed.
      My System SpecsSystem Spec

  5. #5


    Posts : 9
    Windows 8


    Sorry. I had forgotten to update my profile. Windows 8 updates are all installed.
      My System SpecsSystem Spec

  6. #6


    United States
    Posts : 3,093
    Windows 8.1 Pro 64-bit


    So what about sfc /scannow? Would also help to have much more info such as computer make/model, OEM or retail 8, UEFI BIOS or Standard BIOS. Did you upgrade from 7 to 8?

    You may end up having to back up important stuff, re-install 8 then upgrade to 8.1.
      My System SpecsSystem Spec

Unable to upgrade to 8.1 OxC1900101 - Ox4000D
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