Fix Windows Security Connection Refused via Group Policy
You open Windows Security and see 'Connection refused' or 'Something went wrong.' Often this happ...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Defender Virus Definition Update Failed
You see an error that Windows Defender virus definition update failed. This usually happens when ...
Fix 'Permission Denied' When Accessing Windows Folders
You try to open a folder on Windows, and you see 'You have been denied permission to access this ...
How to Fix Windows Defender That Keeps Stopping and Starting
If you notice Windows Defender (Microsoft Defender Antivirus) repeatedly stopping and restarting,...
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...
Fixing Certbot Certificate Renewal Failed Error Code
You run certbot renew and get an error code instead of a renewed certificate. This i...