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 Windows Search Not Indexing Files
You search for a file in Windows, but nothing shows up. The file is definitely there, but Windows...
Fix OBS Studio Black Screen on Windows 10
If OBS Studio shows a black screen when capturing your desktop or a specific window on Windows 10...
Fix Task Scheduler Version Mismatch Error: Step-by-Step Guide
If you see a "task scheduler version mismatch" error when trying to import or run a scheduled tas...
Fix OneDrive Sync Stuck on 404 Not Found Error
If your OneDrive sync is stuck and you see a 404 Not Found error, it usually means the sync engin...
Fix Remote Desktop Certificate Error 0x80090322
When connecting to a remote desktop, you might see error 0x80090322. This usually appears as a me...
Topic paths
Quick titles
How to Resolve Task Scheduler DNS Problems in Windows 10Fix OneDrive Error 0x8004de40: Connection or Credential IssueFix 'Access Denied' When Clearing Command Prompt CacheWindows 10 Teams Crashing? Try These FixesOutlook Add-in Causing High CPU? Here's How to Fix ItFix OneDrive Sync Setup Timeout During Initial ConfigurationResolve 'Access Denied' in Windows Security AppFix Outlook OAuth 2.0 Token Expired Error