Fix Windows Certificate Error 0x800b0109
When you see error code 0x800b0109 in Windows, it means the operating system cannot verify a digi...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix 'Access Denied' Windows Update Errors via Group Policy
You click "Check for updates" and get an "Access Denied" message. This often happens because a Gr...
Fix Windows Search Not Running on Startup
If Windows Search doesn't start when you boot your PC, you'll notice the search box or taskbar se...
Fix Windows Activation High CPU Usage in Safe Mode
If you've booted into Safe Mode and noticed the CPU pegged at 100% due to a process related to Wi...
How to Enable Windows Update Service When It Is Disabled
If Windows Update fails to run or you see an error like "Windows Update cannot check for updates"...
Fix Windows 10 Sign-In Loop When Searching
You search for something using the Start menu or taskbar, and instead of results, you get a promp...
Topic paths
Quick titles
How to Resolve Outlook DNS ErrorsHow to Fix Chrome SSL Protocol Error: Invalid Server CertificateResolve Outlook Authentication Error with App PasswordsHow to Fix OneDrive Sync Stuck on LoadingFix Remote Desktop Credentials Permission Denied ErrorFix Microsoft Store Invalid Configuration with wsresetHow to Recover Missing Windows Activation LogsWSReset Fix for Microsoft Store Permission Denied