Checklist for Fixing Windows Security Startup Failure
When Windows Security (formerly Windows Defender) fails to start at boot, you may see an error li...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Activation Error 0x80070002 (Dependency Conflict)
You try to activate Windows and get error 0x80070002. The message often says something like “depe...
Fix 'Command Prompt Run as Administrator Permission Denied'
You try to run Command Prompt as administrator, but you get a 'permission denied' or 'access deni...
Task Scheduler 'Run Whether User Is Logged On or Not' Not Working
You set a Task Scheduler task to run whether the user is logged on or not, but it doesn'...
Fix Chrome Extension Permission Denied Error 0x80070005
When installing or updating a Chrome extension, you may see error code 0x80070005 with a message ...
Fix Windows Search Version Mismatch Configuration Tool
If you see an error like "Windows Search version mismatch" when trying to run the configuration t...
Topic paths
Quick titles
Fixing Microsoft Store Version Mismatch Sync IssuesHow to Identify a Chrome Extension Causing Browser CrashesFix Command Prompt Dependency Conflicts: Step-by-Step ConfigHow to Restart Windows Defender Threat ServiceHow to Fix Windows Security Log 'Permission Denied' ErrorFix Microsoft Teams Restore Stuck or Not CompletingChrome Profile Setup GuideChrome Multi-User Profile Setup and Management