You need to establish a Remote Assistance connection with Michael’s computer. What should you do next? The right answer is to ask your firewall administrator to open the TCP/IP ports that are used by Remote Desktop Services.
The problem in this scenario is that the firewall is blocking the Remote Desktop Protocol port 3389. Remote Assistance uses the Remote Desktop Protocol port 3389 for outbound RDP traffic. This port is typically blocked on most firewalls, in which case we cannot connect to the Remote Desktop. We must configure the firewall to enable Remote Desktop Services program, which is Mstsc.exe, to make outbound TCP connections on port 3389.