I have a similar problem from PocketCloud to Win XP SP3 except I can only get three to four minutes, maximum. Doesn't matter if it is WiFi or 3G. I can reconnect, though. It is just difficult to have to reenter credentials every couple of minutes.
I have the same problem too. With my PC I can stay connected in RDP for days with the same wi-fi connexion, but with pocket cloud it's impossible to be connected for more that one hour. I have try anything possible on the server by configuring the keep alive, the auto reconnect, etc.
This problem is documented on this forum since + 1 year now. For example:
What version of PocketCloud are you using? Are you using a manual or auto-discovered connection? If you are using auto-discovery, what version of the Companion software are you using?
Also, how are you connecting when you are having this problem (3G/4G or wifi)?
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