Win 8.1 Pro, N360 21.0.2.38. Trying to activate online storage from Manage Backup, message 'Unable to acivate online storage'. Two frusrating sessions with support chat uninstalling and reinstalling have not fixed the problem. None of the solutions in the forum have helped. I idly went into buy more storage and the system requirements do not mention Win 8 / 8.1 as supported OS. Any ideas out there or is N360 not completely compatible with Win 8.1?