Fix Windows Defender Authentication Failed Group Policy Error
You may see an error saying "Windows Defender authentication failed" after applying a Group Polic...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Remote Desktop Connection Timeout Errors
When your Remote Desktop connection drops with a timeout error, it usually means the session ende...
Fix Windows Activation 502 Bad Gateway Firewall Issues
When you try to activate Windows and see a 502 Bad Gateway error, it often point...
Fix Windows Security Not Launching at Startup
You restart your PC and notice Windows Security (formerly Windows Defender) isn't running. The ic...
OneDrive DNS Error Checklist for Administrators
When OneDrive fails to sync or shows a DNS error, the cause is often a misconfigured DNS setting,...
Fix Windows Security Connection Refused Due to Antivirus Blocking
You try to open Windows Security or run a scan, and get a 'connection refused' error. Often this ...