Fix Windows Update Auto Start Not Working After Update - Fix Windows Security Error 0x80073b01: App Install Blocked-Troubleshooting Windows Certificate Error 0x800b0109

Updated 2026-06-14 06:31:27macos-help
Fix Windows Update Auto Start Not Working After Update - Fix Windows Security Error 0x80073b01: App Install Blocked-Troubleshooting Windows Certificate Error 0x800b0109
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.