Fix Windows Defender Service Not Starting (Error 404)
If you see error 404 when trying to start Windows Defender, it usually means the service executab...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labRepair Windows Security Installation via Command Prompt
Windows Security (formerly Windows Defender) can sometimes fail to open, show blank screens, or r...
BitLocker Auto Unlock Troubleshooting Checklist
BitLocker auto unlock lets you access encrypted drives without entering a password each time. Whe...
Fix Windows Security DNS Errors After a Windows Update
After a recent Windows update, you may see a DNS error inside Windows Security (formerly Windows ...
Fix Windows Terminal Login Loop Error (Exit Code 1)
You open Windows Terminal, see a flash of a login prompt, then it closes immediately with an erro...
Microsoft Store Troubleshooting Guide: Step-by-Step Fixes
If the Microsoft Store won't open, apps fail to download, or you see error codes like 0x80072efd ...