Fix Windows Defender Service Not Starting (Error 0x80070422)
You try to start Windows Defender but get error 0x80070422: “The service cannot be started, eithe...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Activation Failed to Start Setup Configuration Error
You might see this error when trying to activate Windows after a hardware change, a major update,...
How to Fix Postman SSL Certificate Verification Failed
If you see SSL certificate verification failed in Postman, it usually means the ...
Fix Windows Search Update Permission Denied Error
You try to update Windows Search, but get a 'permission denied' message. This usually happens whe...
Fix Windows Security Auto-Start Not Working After Update
After a recent Windows update, you might notice that Windows Security (formerly Windows Defender)...
Fix Windows Terminal Token Expired Error: Step-by-Step
You're working in Windows Terminal and suddenly see a 'token expired' or 'authentication token ex...
Topic paths
Quick titles
Resolve Windows Search Access Denied with Group PolicyHow to Resolve Windows Defender 404 Registry IssueChecklist for Windows Update Version MismatchHow to Fix SSL Certificate Errors in Chrome Windows 10Teams Offline Installer Not Working? Here's How to Fix ItFix 'Java JDK Not Recognized' in IntelliJ IDEAHow to Fix Permission Denied Error in Windows UpdateHow to Fix Windows Defender Antivirus Disabled Permanently