Fix Windows Security 'Permission Denied' Error When Settings Won't Open
You click Windows Security (formerly Windows Defender) and get a "Permission denied" or "This set...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Search SSL Certificate Error via Registry
If you see an SSL certificate error when using Windows Search (e.g., searching in Outlook or File...
How to Reactivate an Expired Windows License
If you see a "Windows license expired" or "Windows activation required" watermark, your copy of W...
Fix Windows Update Cleanup Tool Not Working Error
You run Disk Cleanup, select Windows Update Cleanup, and nothing happens—or it fails with an erro...
Fix Windows Update Authentication Failed Error
When Windows Update fails with an authentication failed error, it usually points to a problem wit...
Fix Windows Security Error 0x80070643 on Ubuntu Dual Boot
If you see error code 0x80070643 when running Windows Security or Windows Update on a dual-boot s...