Windows Defender Troubleshooting Checklist for Common Errors
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background. But w...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listOneDrive Sync Error 404 Not Found: Causes and Fixes
You open OneDrive and see a '404 Not Found' error during sync. This usually means OneDrive can't ...
Fix Windows Terminal Authentication Failed in Remote Desktop
You open Windows Terminal, try to start a Remote Desktop session, and get an authentication faile...
How to Fix Windows Defender 504 Gateway Timeout
If you see a '504 Gateway Timeout' error when opening Windows Security or running a scan, Windows...
Fix Windows Search Service Not Running
You open the Start menu or File Explorer to search for a file, and nothing happens — or you see a...
Fix Remote Desktop Connection Timeout Error 0x104
When you try to connect to a remote PC and get error 0x104, the connection times out before the l...
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