Yes the rdp setting is on allow any user. I have been able to setup a manual connection in pocketcloud to the troublesome pc, however this required that I go into the routers port forwarding (its a Draytek v2700G) and forward 3389 to the local ip of the computer. While I had done this the autodiscovery on my other working pc still connected, however the autodiscovered connections for the problem pc still did not want to connect. I would prefer to be able to use the autodiscovery method for both computers rather than changing my router setting and forwarding that port.
Thanks for your help so far