Windows Defender Service Troubleshooting Checklist
If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix BitLocker Version Mismatch Configuration Errors
You try to enable BitLocker on a drive and get an error about a version mismatch. This usually ha...
Fix Windows Search Indexing Stuck or Not Working
Windows Search stops indexing files, says "Indexing not running," or shows a status that never ch...
Fix PowerShell Permission Denied When Running Script
You try to run a PowerShell script and get a 'permission denied' error. This usually happens beca...
Fix OneDrive Sync Configuration Login Loop
You sign in to OneDrive, the sync configuration window appears, and then you're asked to sign in ...
Checklist for Resolving Windows Security 504 Gateway Timeout
If you see a 504 Gateway Timeout error in Windows Security, it usually means the security service...