How to Set Up Windows Security to Fix DNS Errors
If you're seeing DNS errors like "DNS server not responding" or "DNS probe finished no internet,"...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Security Service Error 0x80070422
You attempt to open Windows Security and get an error: "The service did not respond to the start ...
Fix Windows Security Proxy Error: Permission Denied
When Windows Security displays a "proxy error: permission denied" message, it usually means the s...
How to Fix Windows Defender Blank Screen Issue
If you open Windows Defender (now called Windows Security) and see only a blank white or black sc...
Windows Security App Not Working After Update: Fixes
After a Windows update, the Windows Security app may fail to open, show a blank screen, or displa...
Fix Windows Activation Error 0x8007007b on Ubuntu
If you see Windows activation error 0x8007007b while using Ubuntu (for example, in a dual-boot se...