
Windows Security DNS Error Troubleshooting Checklist
If you see a DNS error in Windows Security—like 'DNS resolution failed' or 'We can't connect to t...
Software troubleshooting desk

If you see a DNS error in Windows Security—like 'DNS resolution failed' or 'We can't connect to t...

When you run Get-MpComputerStatus or Start-MpScan and see "The ...

When you double-click Windows Security and nothing opens, or you see error 0x80073cfc, it usually...

If you're seeing frequent connection timeouts—especially when accessing shared drives, remote des...

You try to update Windows Defender, but it fails with error 0x80240022. This usually means Window...

After a Windows or Microsoft 365 update, Outlook may fail to open—no window appears, or it crashe...