I'm running into an issue with my newly set up RDG server that has a Duo proxy app installed. Despite everything functioning well, I'm being prompted for Duo authentication every 15 minutes to keep my session active. Once I authorize it, I can continue without needing to enter additional credentials. This happens on multiple clients, both on my home PC and a domain-joined one. I've confirmed that time limits are turned off in the Group Policy settings for both the server and the remote host, which are located in the same Organizational Unit. The RDG server reports a standard disconnected session without any notable issues. It seems that Duo's settings are primarily defaults, with only a few registry changes noted, but I'm not seeing anything that would help remediating this. I've enabled transport via HTTPS to the remote desktop at port 3389, and UDP is also set up. Any insights into why this keeps happening?
1 Answer
You might need to adjust the timeout or session time configuration in your Duo settings. It's possible that the default settings are too aggressive. Make sure to check within the Duo admin panel or wherever the settings for your proxy are.

Where exactly should I look for those settings? I've searched around, and most options seem to be either missing or disabled in the registry.