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Fix Windows Security Service Not Starting Error

You click the Windows Security icon, but it doesn't open. Or you see an error saying the service ...

Fix 'File Locked by Windows Security Cannot Delete'

You try to delete a file, and Windows tells you it's locked by Windows Security. This often happe...

Fix Windows Defender Virus Definition Update Errors

When Windows Defender fails to update virus definitions, you might see error codes like 0x8007000...

How to Fix Windows Security Service Unavailable

When Windows Security shows "Service unavailable" or a red banner, your antivirus and firewall pr...

Fix WSL Ubuntu Internet Not Working After Windows Restart