Fix Windows Security Service Not Running for Antivirus
If Windows Security shows 'Service not running' or your antivirus isn't working, the underlying s...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows Security Backup Not Working
Windows Security backup (part of Windows Backup or File History) may stop working for several rea...
Fix Task Scheduler Authentication Failed: Scheduled Task Not Running
You set up a scheduled task in Windows Task Scheduler, but it never runs. You check the history a...
BitLocker Command Not Found: Recovery Checklist
When you run a BitLocker command in Command Prompt or PowerShell and get 'command not found', it ...
Fix OneDrive Sync Stuck on Processing Changes on Mac
OneDrive for Mac sometimes shows 'Processing Changes' for a long time, preventing file sync. This...
Fix Windows Store Error 0x80073cf9 – Setup Guide
When you see error 0x80073cf9 in the Windows Store, it usually appears during app installation or...
Topic paths
Quick titles
Outlook Proxy Settings Reverting: Troubleshooting GuideOneDrive Not Syncing After Update FixFix Microsoft Store Endless Loading ScreenFix Windows Security Invalid Configuration ErrorMicrosoft Store Offline Installer Not Working on Windows 10: FixesFix Microsoft Teams Screen Sharing Not WorkingResolve OneDrive Sync Token Expired Error macOSTroubleshoot Windows Defender Real-Time Protection Turned Off