How to Fix Windows Defender Service Not Running
If you see a message that Windows Defender is not running or the security center shows it's off, ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix 'Windows Activation Path Not Found' SLMgr Command Error
When you run an SLMgr command (like slmgr /ipk or slmgr /ato) and see <...
Fix Windows Security High CPU Usage and Slow PC
If your PC feels sluggish and Task Manager shows Windows Security (or Antimalware Service Executa...
Fix Remote Desktop Connection 404 Error in IIS
When you try to connect to Remote Desktop Web Access (RD Web Access) through IIS, you may see a 4...
Fix Windows Search Port Already Allocated Error (Event ID)
If you see an Event ID error in Windows Event Viewer indicating that the Windows Search service f...
Fix Windows Activation SSL Certificate Error Not Working
You're trying to activate Windows, but you see an SSL certificate error and activation fails. Thi...
Topic paths
Quick titles
Task Scheduler Sync Failure Due to Rate LimitingFix Task Scheduler Job Not TriggeringCMD Fix for Windows Activation Server Connection ErrorWindows Defender Won't Start in Windows 10: Troubleshooting GuideResolving Chrome Certificate Error Common Name InvalidChrome 504 Error on One Site Only FixFix Windows Defender Log Not CreatingTroubleshooting VS Code Terminal Startup Problems