I have bought My Passport Ultra - I have not been able to get a back-up started. The only response is that the Passport is Offline. Now I have an understanding that I may have to disable some anti-virus (I have AVG and Windows Defender) but that is as far as I understand. Is there a step by step guide as to how to resolve this. I hoped that by buying My Passport it would be a plug-in and working but I have no experience with anti-virus and could do with some simple common sense help please. Thank you for your help