Fix Windows Security High CPU Usage and Slow PC
If your PC feels sluggish and Task Manager shows Windows Security (or Antimalware Service Executa...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows Defender Not Turning On
Windows Defender (now called Microsoft Defender Antivirus) sometimes refuses to turn on or stay o...
Fix Windows Search Version Mismatch Not Finding Files
If Windows Search suddenly stops finding files after an update or upgrade, a version mismatch bet...
Fix Windows Defender Auto Start Not Working in Windows 10
If you find that Windows Defender isn't starting automatically when you boot Windows 10, your sys...
How to Fix Task Scheduler 404 Not Found Error
If you're seeing a '404 Not Found' error when opening Task Scheduler or running a scheduled task,...
Fix 'BitLocker Command Not Found' Error in Windows 11
When you try to run a BitLocker command in Windows 11 and see 'bitlocker command not found', it u...
Topic paths
Quick titles
PowerShell 504 Gateway Timeout TroubleshootingTask Scheduler Error 0x80070057 After Update FixResolve Microsoft Store Invalid Configuration RegistryFix Command Prompt Offline Installer ErrorsHow to Resolve Chrome Port Already Allocated ErrorWindows Search 0x80070005 Permission FixOutlook Logging Setup GuideHow to Resolve Windows Terminal JSON Validation Problems