
Checklist for Fixing Windows Security Startup Failure
When Windows Security (formerly Windows Defender) fails to start at boot, you may see an error li...
Software troubleshooting desk

When Windows Security (formerly Windows Defender) fails to start at boot, you may see an error li...

If you see error code 0x80131500 when trying to open the Microsoft Store or download an app, the ...

You open the Microsoft Store, see an update available, but when you try to install it, you get a ...

You might see a version mismatch warning when opening Windows Defender Security Center or running...

If you're running Windows on a Mac via Boot Camp, Parallels, or another virtual machine, the Wind...

If you notice Windows Defender real-time protection is turning off by itself, your PC may be vuln...