I ran across the fact that the username OmniSynThesis is already used. I bet I have used it with Microsoft ID 'Joscelin.Trouwborst@OmniSynThesis.com' or 'OmniSynThesis@OmniSynthesis.com'. Bot these accounts used to be accounts I managed through Microsoft Live Admin Center. I have deleted these accounts in Admin Center on 15 august 2013. It would not be the first time that I run across canceling an account and that not all services with it are cancelled. Could you check on this please, as I would like to retain 'OmniSynThesis' as a user name.