I am stumped and need some assistance.
I have a simple 2012 R2 RDS server set up for remote access. The server holds all RDS roles. The server is configured the same way I had configured another server in the thread TP helped me with:
https://social.technet.microsoft.com/Forums/windowsserver/en-US/8c40726d-9dd7-4e4d-ac53-e5634251db6b/server-2012-rdweb-internal-external-domain-name-mismatch?forum=winserverTS#97095157-fc40-4ec1-b8b4-a1793bfe2063
The client who access this server originally wanted to use RDP client, NOT RDWeb. So, they have been using RDP through the gateway. They requested to be prompted for credentials each time they connect. We had a technician try multiple settings to force them to be prompted a while back. Now, I have set up RDWeb, I do not want them using RDP client anymore. The problem is, SSO is broken.
When a user logs in to RDWeb, they are presented with the Remote Desktop icon, and when they click they are prompted for credentials again.
This only happens through RDWeb. If I try to connect through RD Gateway via RDP client, I do not get prompted again.
I have tried deleting and creating a new collection, still the same issue. I think there may be a local security policy in place, or a registry setting forcing this, but the fact that it only happens through RDWeb perplexes me.