RDP and New Accounts
I created a new user account on the domain and added them to the
Remote Desktop Users group.
I could login just fine locally, but when I logged in remotely I was basically told that I could not login from there using that user. I could login just fine as the administrator or anybody else other than that new account.
So I researched it a bit more and found that my setting looked like this on the local machine:
So I changed it to
Allow connections only from computers running Remote Desktop with Network Level Authentication (NLA). Now when I tried this down at my office I connected with RDP just fine on another computer. But low and behold when I got home and simply try to connect to the machine, I get the message:
There has to be some kind of in between setting, or additional setting that I need to change on the user that allows me to connect directly via remote desktop over the VPN. At the moment I can connect by connecting to another computer on the network and then RDPing from there into my machine, but this is not ideal.
You haven't told us what the initial error you got actually was, so I'm guessing that you didn't put the user in the local administrators group. Notice that you did get a warning about this when you enabled remote desktop on a windows client.
Enabling NLA does not affect this.
NLA is an authentication model supported with RDP7 and above. You do not need to have NLA required as it appears your client does not support it.
RDP does not have any idea if you are connecting over a VPN.
In all likelyhood, there was some latency due to the user being logged on (which would inhibit group membership from being updated) or some other unknown reason (active directory propegation, peraps?) that caused the user not to appear as though they were a member of
Remote Desktop Users.
Remove the requirement for NLA and try connecting again.