How To Bypass RemoteApp Launch Security Warning "unknown publisher"

Never thought my first post here will be technical related, but I've gotta face the truth that starting with technical hints and tips would be more appealing to those I.T dudes. Anyway, I write the blog to share the experience that I have suffered from the annoying security prompt when user launched RemoteApp connection and it took me a while to successfully resolve this.

For those who suffering from the same issue would be familiar with this:

Actually we can get rid of this by ticking the option to avoid seeing this again. But in a larger organization, you could imagine that would not be an easy task to ask everybody to do it and it is not an elegant way to do it.  To avoid post-deployment nuisances, you can either sign the RDP file with a legitimate certification or get around this by just modifing registry without risks.


The location in registry you need to hack on is:
[HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\LocalDevices]
"ServerFQDNname"=dword:0000006f


So in registry, after modification it looks like:

The only cons is the fact that you have to make the change for each RemoteApp server.