Hello,
I have a Remote Apps deployment which includes two servers. Server A is deployed with all RD roles (session host + gateway) and is reachable from the outside via 443; and Server B which is only a session host and is open for internal traffic only.
All users from inside my network are able to open apps published on both servers, without a problem.
Windows users from the outside are only able to open apps published on server A. When they try to open an app from server B they get the error "An authentication error has occurred 0x607" with the server name of server B. It seems that the authentication doesn't work properly through the gateway (server A) for published apps.
Important note #1 - Opening a standard Remote Desktop Connection (mstsc) from the outside to server B by configuring the gateway in the advanced tab works perfectly. It seems that this problem is only related to the published apps.
Important note #2 - Opening the remote apps on Server B works perfectly from a "Remote Desktop" app for mobile - for example, from an Android phone or an iPad.
Does anyone have any ideas?