Windows Update Error 800B0100
If you receive the Windows Update error 800b0100, it means that a file needed by Windows Update is not registered with Windows correctly. The System Update Readiness Tool can correct some conditions that cause this error. To use the tool, follow these steps:
Go to the System Update Readiness Tool
webpage. In the Information for advanced users section, find the version of Windows and system type of your computer, and then click the link to download the System Update Readiness Tool. If you don't know which version of Windows you have, see View your computer information.
Run Windows Update again.
Note
Typically, the scan takes 15 minutes or less, but it can take longer on some computers. The Windows Update progress bar is not updated during the scan, and progress seems to stop at 60% complete for some time. This behavior is expected. The scan is still running and you should not cancel the update.
If you continue to see this error, see this automatic troubleshooter
on the Microsoft Support website, or go to the Microsoft Answers
website for more assistance.
Error codes this applies to:
WindowsUpdate_800B0100
0x800B0100
