
Fix Windows Defender Can't Connect to Microsoft Server
When Windows Defender shows 'Can't connect to Microsoft server', it usually means the antivirus c...
Software troubleshooting desk

When Windows Defender shows 'Can't connect to Microsoft server', it usually means the antivirus c...

After a Windows update, you might see a “permission denied” error when trying to activate Windows...

After a recent Outlook update, you might see an error like "Port already allocated" when trying t...

After a Windows or Microsoft 365 update, OneDrive may get stuck on the sign-in screen or show err...

You open Task Manager and see Microsoft Store eating 20-30% CPU, fan spinning up, system sluggish...

You try to activate Windows and get error 504. This often means your firewall is blocking communi...