Fix Windows Defender Proxy Error Not Working
You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Security High CPU Usage and Slow PC
If your PC feels sluggish and Task Manager shows Windows Security (or Antimalware Service Executa...
Fix Chrome Profile Authentication Failed on Windows 10
You open Chrome on your Windows 10 PC and get an error saying "Profile authentication failed." Th...
Fix Microsoft Store Blank Screen When Other Apps Work
You open the Microsoft Store and see nothing but a blank white or gray screen. Other apps—Edge, O...
Fix Microsoft Store Blank Screen After Reinstalling App
If you've reinstalled an app from the Microsoft Store and now see a blank screen when opening the...
Fix Windows Activation License Expired After Upgrade
After a major Windows upgrade (e.g., from Windows 10 to Windows 11 or a feature update), you may ...