Not sure. We already have a key for ServerSolution which is different from the VVWPG-... one. Perhaps somebody who is using Small Business Server 2011 Essentials can comment on whether VVWPG is right or the current Y7GVM is. Or perhaps ServerSolution is not the right EditionID for this all together. My comment was only to say that the VVWPG key was for ServerSolution but I was not saying that ServerSolution is the right EditionID for the Small Business Server 2011 Essentials. Based on the other EditionIDs, you would expect it to be ServerSBS something.
Oh, sorry, you are right: italian language. I used IR5. My question is only a doubt. I don't do anything for now! But if I restore with Windows Backup my C: partition, or I use System Restore? You see, a system restore can always happen, unfortunately. But I think that a simply uninstall and reinstall would solved the problem. What do you think of it?