Fixing the issue of Remote Desktop Gateway server not being reachable from a Windows 10 device
One of my customers recently reported an issue where RDS was not reachable from an AAD joined Windows 10 device. They were trying to connect remotely and reported the following error. The devices are enrolled in Intune and users are setup as Standard accounts. So what does the error mean? Based on my research, the error indicates that the RDP connection failed to establish using HTTP with UDP. RD Gateway role is used for securing connectivity to Remote Desktop Services via the Internet. RD Gateway uses the following 3 transport protocols - 1. RPC over HTTP – used with RDP 7.1 and previous clients, or when connecting to a Windows 2008 R2 RD Gateway. 2. HTTP – RDP 8.0 clients always use HTTP as the default transport, falling back to RPC over HTTP if the HTTP transport is not available. The HTTP transport uses the Secure Sockets Layer to establish secure connections between the remote desktop client and the remote desktop server through RD Gateway. This transport type became availa...