Hi,
I havethe exact same problem. We currently have3 Hyper-V servers.1 is afully installed Windows Server 2012 and the other twoare Windows Server2012Core servers.Everything is working fine on the fully installedServer 2012 and onone of the core servers. However - On the last coreserver, we constantly get the "Communication with device has failed".When I try to remove the Power Source from the failed Core server,andlook it up again through the "Auto Discovery" it won't locatethe UPS thestraight away. It may tak somewhere between 5-20 tries beforeit finds it. Whenit does find it, sometimes it's ableto"read" the UPS and tell me the Battery state and so on. Othertimes, it simply won't tell me anything about the UPS from the managementconsole on the server. But when it does,after about 2 minutes, it says:"Communication with device has...