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 listHow to Fix Microsoft Teams Not Opening
When Microsoft Teams fails to open, it often shows no error message or just hangs on a splash scr...
Fix PowerShell Ubuntu Missing Dependencies in WSL
When trying to install PowerShell on Ubuntu under WSL, you might see errors about missing depende...
Fix 'Windows Activation Service Not Starting' Permission Denied
When you see "Windows Activation Service not starting" with a "permission denied" error, the serv...
Fix OneDrive Sync Update Error 0x80004005
When OneDrive fails to sync with error 0x80004005, it usually means a file or folder conflict, co...
How to Fix Remote Desktop Connection Refused Error
When you try to connect to a remote PC and see "Connection refused" or "The connection was refuse...
Topic paths
Quick titles
Fix PowerShell Not Launching from Start MenuPersistent Aliases and Colors in Command PromptWindows Activation Command Prompt Access Denied FixFix OneDrive Sync Error via RegistryWindows Update Command Line Force Install GuidePowerShell Module Path Missing: Troubleshooting GuideFix Windows Defender File Locked Permission Denied ErrorFix Remote Desktop Permission Denied Errors