
How to Reinstall the Windows Security App (Microsoft Defender)
If the Windows Security app (Microsoft Defender) is missing, won’t open, or shows errors, reinsta...
Software troubleshooting desk

If the Windows Security app (Microsoft Defender) is missing, won’t open, or shows errors, reinsta...

After a Microsoft Teams update, you may see a DNS error preventing sign-in or connection. This us...

If Windows Security (formerly Windows Defender) has disappeared from your Start Menu, it usually ...

After a Windows migration (upgrade, new PC, or disk clone), you might notice that Windows Search ...

If Windows Search gives you a "connection refused" error, it usually means the firewall is blocki...

When Windows Search stops working and you see error 0x80070005, it usually means the search index...