Fix Windows Defender Service Not Starting (Error 404)
If you see error 404 when trying to start Windows Defender, it usually means the service executab...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix 'File Locked by Unknown Process' in Command Prompt
You try to delete, rename, or move a file, but Windows says it's locked by an unknown process. Th...
Fix Task Scheduler Stuck Loading After Reboot
If Task Scheduler appears stuck on the 'loading' screen every time you restart your computer, you...
Fixing Chrome Profile Update Error and Sync Not Working
You open Chrome and see a profile update error, or sync just stops working. This often happens af...
Fix Teams App Stuck on Loading Screen on Mac
If Microsoft Teams gets stuck on the spinning loading circle on your Mac, you’re not alone. This ...
Fix Slow Command Execution in Command Prompt
If you notice that commands in Command Prompt (cmd.exe) take several seconds to execute, even sim...
Topic paths
Quick titles
How to Fix Windows Update Installation FailuresHow to Enable Remote Desktop on Windows 11Fix Microsoft Store 504 Gateway Timeout & Network IssuesChrome Profile Configuration GuideResolve Windows Update Connection TimeoutFix Chrome Update Errors on Windows 10Windows Security Update Checklist Before InstallingWindows Security DNS Error: How to Restore Internet