Error 0x800B0100 when you try to install Windows Updates or Microsoft Updates


When you try to install the latest updates from Windows Updates or Microsoft Updates, you may receive the following error message:
Error(s) found:

Code 800B0100 Windows Update encountered an unknown error.

This issue may occur if a file needed by Windows Update is corrupted or missing.


Windows 8.1 or Windows 8
Windows 7
Windows Vista
Windows XP

Article ID: 956702 - Last Review: Aug 5, 2016 - Revision: 1