Fix Windows Search 404 Error by Rebuilding the Index
When Windows Search throws a "404 error" or returns no results, the search index is often corrupt...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Defender Setup Checklist for New PC
When you set up a new PC, Windows Defender (now called Microsoft Defender Antivirus) is already a...
How to Fix Windows Defender Authentication Failed Error
If you see "Authentication failed" when opening Windows Defender or trying to run a scan, it usua...
BitLocker Recovery Key Not Accepted After BIOS Update
After a BIOS update, you might be prompted for your BitLocker recovery key, only to find that the...
Fix Windows Security Token Expired Access Denied Errors
When a Windows security token expires, you may see an 'access denied' error even though you belie...
How to Unlock a File Locked by Windows Terminal
You try to delete, rename, or edit a file and get an error that it's open in Windows Terminal. Th...
Topic paths
Quick titles
How to Get Windows Defender Working AgainWindows Terminal Cannot Connect to Server GuideHow to Fix Windows Update Error 0x80070002Troubleshooting Error 0x80070002 on Windows UpdateHow to Resolve Git SSL Certificate ErrorsFix Outlook Exchange Connection via ProxyResolve VS Code Extension Host Crash on Remote SSHPowerShell Remote Execution Not Working? Network Fixes