I was able to set up the Remote Desktop gateway and use RDP externally with my user account to log on to my machine, and other PCs in the company. However, when I try for any other account, I get an error, even if that person is in the Remote Desktop Users group for the gateway. It's a single server setup. The error I get is the "Remote desktop cannot connect to the remote computer" message.
Even log shows an ID 6274 in auditing - "There are not sufficient access rights to process the request."
I believe the RDG_CAP_ALLUsers is set up correctly for domain users and client computer membership is left blank.
Any suggestions on how to proceed? Thanks.