Fix Windows Defender Service Unavailable Error
You open Windows Security and see the message 'Windows Defender service unavailable' or 'Windows ...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labHow to Fix Windows Security 404 Error When Opening
When you open Windows Security and see a 404 error page, it usually means the app can't find its ...
Fix Windows Activation Command Not Found or Permission Denied
When trying to activate Windows using the command line (slmgr.vbs or slui), you might see errors ...
Fix Windows Update Login Loop After Configuration Settings
You restart your computer after a Windows update, and instead of reaching the desktop, you see th...
How to Fix Windows Update Error 0x80073712
You see error 0x80073712 when trying to install updates. It usually means a system file or compon...
Fix Windows Update SSL Certificate Error After Time Change
If you've recently changed the system time on your Windows computer and now see an SSL certificat...