When you configure RemoteApp and Desktop Connections applet to provide RemoteApps to users via the Start Menu you may run into this error:
For instance, my name on my certificate is: rdweb.ilove2ski.net. But my feed is set to a local URL instead: https://rdweb.ash.local/RDWeb/Feed/webfeed.aspx
These two places much match.
So I change my web feed URL to: https://rdweb.ilove2ski.net/RDWeb/Feed/webfeed.aspx,
In order for my internal users to understand where to go for this external URL, I add a dns zone (ilove2ski.net) and DNS entry pointing rdweb.ilove2ski.net to the internal IP address of the RD Web server (or do loopback through your firewall if it supports it).