Fix Windows Security 404 Not Found Permissions Issue
You open Windows Security and see a 404 Not Found error, or the app won't load at all. Often this...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Defender Dependency Conflict Error
If you see a Windows Defender error about a dependency conflict, it usually means a required serv...
Fix Windows Security Service Failing to Start on Startup
If Windows Security (Windows Defender) fails to start when you boot your PC, you may see a warnin...
Fix Windows Security Won't Turn On Real-Time Protection
You click the toggle to enable real-time protection in Windows Security, but it switches back off...
How to Fix Windows Defender Error 0x80070422
When you see error 0x80070422 while trying to start Windows Defender, it typically means the Wind...
Windows Defender 502 Bad Gateway: Setup and Troubleshooting Guide
When setting up Windows Defender or updating its definitions, you might encounter a 502 B...