
Windows Defender Cannot Connect: Troubleshooting Checklist
You open Windows Security and see a message like "Windows Defender cannot connect" or "Check your...
Software troubleshooting desk

You open Windows Security and see a message like "Windows Defender cannot connect" or "Check your...

When a Windows update fails and you see "Undoing changes" or "We couldn't complete the updates, u...

You unlock a BitLocker-encrypted drive, but when you try to open it, Windows says 'permission den...

If you see error 0x80240016 when updating Windows Defender, it usually means Windows Update or De...

When you see 'Connection refused' in PuTTY, it usually means the SSH server on the remote machine...

You try to visit a site you’ve used before, but Chrome shows “Access Denied” or “403 Forbidden.” ...