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.
Solution:
Windows 8.1 or Windows 8
Step 1: Run the Windows Update Troubleshooter
Run the Windows Update troubleshooter below, and then run Windows Update again. To start the troubleshooter, clickrun now:
Step 2: Use System File Checker to repair damaged Windows files
If the problem continues, use the System File Checker tool to repair damaged Windows files. To do this, follow these steps:
- Open an elevated command prompt.
- Run the “sfc /scannow” command.
- Try to install update again.
Step 3: Run the DISM tool
If the problem continues, use the Deployment Image Servicing and Management (DISM) tool to fix Windows Update corruption errors. To do this, follow these steps:
- Open an elevated command prompt.
- Run the “DISM.exe /Online /Cleanup-image /Restorehealth” command.
Important When you run this command, DISM uses Windows Update to provide the files that are required to fix corruptions. However, if your Windows Update client is already broken, use a running Windows installation as the repair source, or use a Windows side-by-side folder from a network share or from a removable media, such as the Windows DVD, as the source of the files. To do this, run the following command instead:
DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows /LimitAccess
Step 1: Run the Windows Update Troubleshooter
Run the Windows Update troubleshooter below, and then run Windows Update again. To start the troubleshooter
Step 2: Use System File Checker to repair damaged Windows files
If the problem continues, use the System File Checker tool to repair damaged Windows files. To do this, follow these steps:
- Open an elevated command prompt.
- Run the “sfc /scannow” command.
- Try to install update again.
Step 3: Run the System Update Readiness tool
Still need assistance on 0x800B0100 initiate the chat
