: General connectivity problems where the RDP port (default 3389) is blocked by a firewall or misconfigured server. How to Fix It
: If you are not using an RDS farm, having the Connection Broker role installed can cause conflicts. You can remove the "Remote Desktop Connection Broker" role via Server Manager > Manage > Remove Roles and Features . After removing the role and rebooting, RDP connections often start working again. rdp error code 0x3 extended error code 0x7
Based on community and official troubleshooting data, this error most commonly appears in the following scenarios: : General connectivity problems where the RDP port