Fix Windows Security Offline Installer Error 0x80070643
You're trying to install Windows Security (formerly Windows Defender) using an offline installer,...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Update Error 0x80070002 Permission Denied
If you see error 0x80070002 with a "permission denied" message when running Windows Update, it us...
Fix Windows Security High Memory Usage
You open Task Manager and see Windows Security (or Antimalware Service Executable) using 500 MB o...
How to Fix 'Outlook Service Unavailable Check Network Connection'
You're working in Outlook and suddenly see the message: "Outlook service unavailable. Check y...
Fix BitLocker on Mac: Compatible Software Not Working
If you're trying to access a BitLocker-encrypted drive on a Mac and the compatible software isn't...
Fix Windows Security App Blank White Screen
You open Windows Security and see nothing but a white screen. The app appears to load but no cont...