
Fix Windows Defender Not Starting Due to Invalid Config
If Windows Defender won't start and you see an error about invalid configuration, the problem is ...
Software troubleshooting desk

If Windows Defender won't start and you see an error about invalid configuration, the problem is ...

You might see a 'permission denied' error when Windows Search fails to index files or when you tr...

You open Windows Security and see that real-time protection is off, even though you didn't change...

You're setting up OneDrive on a new PC or after a reset, and the sync setup hangs or times out. T...

If you see an error like "The connection to Microsoft Exchange is unavailable. Outlook is using p...

After changing your Microsoft account password, you may see a “token expired” or “sign-in require...