Remote Desktop Error Code 0x3 Extended Error Code 0x12

If the target computer shows "The trust relationship between this workstation and the primary domain failed":

If the host machine has a dedicated GPU that is conflicting with the virtual RDP driver. remote desktop error code 0x3 extended error code 0x12

This is the true diagnostic. Microsoft’s RDP stack defines 0x12 as a failure in either: If the target computer shows "The trust relationship

Navigate to: Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session Environment . remote desktop error code 0x3 extended error code 0x12

The Remote Desktop error code 0x3 with an extended error code 0x12 can be a bit challenging to troubleshoot, but I'll provide a solid article to help you understand and potentially resolve the issue.