← Back to DatabaseHow to Fix Error 0x800b0109
Topic: Windows 11 Update Errors | Status: Updated
What is this error?
Error 0x800b0109 typically occurs during Windows Update, indicating that there is a problem with the digital signature of the update package. This error can prevent the successful installation of updates and may signify that the relevant certificate is missing or corrupted.
How to Fix It
- Run the Windows Update Troubleshooter:
- Go to Settings.
- Select Update & Security and click on Troubleshoot.
- Choose Additional troubleshooters and run the Windows Update Troubleshooter.
- Check Date and Time Settings:
- Right-click on the date and time on your taskbar and select Adjust date/time.
- Ensure your date and time are set correctly; enable Set time automatically.
- Update Windows Certificates:
- Open Command Prompt as administrator.
- Run the command:
certutil -generateSSTFromWU roots.sst.
- Next, execute:
certutil -addstore -f root roots.sst.
- Run System File Checker and DISM:
- Open Command Prompt as administrator.
- Execute the command:
sfc /scannow and wait for the process to complete.
- Then, run
DISM /Online /Cleanup-Image /RestoreHealth to repair Windows images.
- Reset Windows Update Components:
- Open Command Prompt as administrator.
- Type the following commands one by one, pressing Enter after each:
net stop wuauservnet stop cryptSvcnet stop bitsnet stop msiserver
- Then, run:
net start wuauserv, net start cryptSvc, net start bits, net start msiserver.
- Reboot Your Computer: Restart your PC and attempt to run Windows Update again.
Disclaimer: This is an educational guide. We are not responsible for data loss. Always backup your system.
