Windows Update error 0x800b0100

If you receive Windows Update error 0x800b0100 or 800b0100, it means that a file needed by Windows Update is damaged or missing. Try one of these methods to resolve the problem.

Method 1: Use the Windows Update troubleshooter

Method 2: Run the DISM tool

  1. Swipe in from the right edge of the screen, and then tap Search.
    (If you're using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, and then click Search.)

  2. Enter command prompt in the search box.

  3. In the list of results, press and hold or right-click Command Prompt, and then tap or click Run as administrator. Administrator permission required You might be asked for an admin password or to confirm your choice.

  4. In the Administrator: Command Prompt window, type the following commands. Press the Enter key after each command:

    dism.exe /online /cleanup-image /scanhealth

    dism.exe /online /cleanup-image /restorehealth

  5. To close the Administrator: Command prompt window, type exit, and then press Enter.

  6. Run Windows Update again.

Method 3: Refresh your PC

If you continue to see this error, try searching for help at the Microsoft Community website website.

Error codes this applies to:

  • WindowsUpdate_800b0100

  • 0x800b0100

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