Fix Windows Defender Firewall Blocking Internet Access
If your internet stops working after a Windows update or security change, Windows Defender Firewa...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Defender Error 0x80073b01 (Crash on Startup)
If Windows Defender crashes on startup with error code 0x80073b01, the antivirus service may be f...
Fix Windows Security High CPU Usage on Windows 10
If your Windows 10 PC is running slow and Task Manager shows Windows Security (or Antimalware Ser...
Fix Windows Defender Update Error 0x80240022
When updating Windows Defender, you might see error 0x80240022. This usually means Windows Update...
Fix PowerShell Permission Denied Error on Startup
Opening PowerShell and seeing a 'permission denied' error can stop you before you start. This usu...
Windows Terminal Blank Screen: Diagnostic Checklist
You launch Windows Terminal and see nothing but a blank window—no cursor, no prompt, just an empt...