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Fix Windows Defender Version Mismatch Sync Errors

You see a message that Windows Defender definitions are out of sync, or that the client and serve...

Command Prompt Dependency Conflict Troubleshooting Checklist

Fix Microsoft Store Error 0x80073cf0 When Updating Apps

When you try to update apps in the Microsoft Store, you may see error code 0x80073cf0. This usual...

How to Fix Windows Security Service Unavailable

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

Fix Windows Defender Blank Screen in Windows 10

If you open Windows Defender Security Center in Windows 10 and see nothing but a blank white or g...

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...