Need to make an unmanaged client into a managed client. This must be done remotely

I asked this earlier, but from what I have seen I have to go on to the PC locally to run SMC - commands which I often can not do. I HAVE to do this over a remote connection. I've tried using the communication update package from SEPM, but I have gotten errors and I could not switch it out. I tested this on my own PC and it said Deployment failed, there was NO explanation as to WHY this failed but it failed.

SEP 12.1.2015 2015

Windows 7 64 Bit Client