Windows Security App Not Opening After Update: Fixes
After a Windows update, the Security app may refuse to open—clicking the icon does nothing, or it...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Update 'Permission Denied' Errors
You click 'Check for updates' in Windows Update, but instead of downloading, you get an error lik...
How to Fix BitLocker High CPU Usage on Systems Without TPM
If you're running BitLocker on a system without a Trusted Platform Module (TPM), you may notice h...
How to Fix SSL Protocol Error in Chrome: Connection Refused
When you see “SSL protocol error” and “connection refused” in Chrome, it means the browser can’t ...
How to Fix Task Scheduler Version Mismatch Errors
When you see a 'version mismatch' error in Windows Task Scheduler, it usually means the task you'...
Fix Windows Security Connection Refused Certificate Error
When you see 'connection refused' combined with a certificate error in Windows Security, it usual...