Fix Windows Security High CPU Usage at Idle
If your system fan is spinning up or Task Manager shows Windows Security (Antimalware Service Exe...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Defender Service Not Starting (Error 404)
If you see error 404 when trying to start Windows Defender, it usually means the service executab...
Fix Task Scheduler 'Access Denied' When Running as Admin
You set a Task Scheduler task to run with highest privileges (administrator), but it fails with a...
Fix VSCode Extension Host Terminated Error on Windows 10
If you see the error message 'Extension host terminated unexpectedly' while using Visual Studio C...
Fix Microsoft Store Error 0x80070424: Update Failed
When you see error 0x80070424 while trying to update an app in the Microsoft Store, it usually me...
Windows Defender Troubleshooting Checklist
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...
Topic paths
Quick titles
Fix Windows Defender by Resetting Service DefaultsHow to Overcome Chrome Password Export DeniedWindows Search Offline Installer Missing Files GuideWindows Security Access Denied After Update FixWindows Activation Failed – Permission Denied TroubleshootingStep-by-Step Guide to Fix Windows Defender Firewall Blocking InternetFix Windows Search Service Not RunningHow to Fix Remote Desktop 504 Gateway Timeout Error