I can’t configure Desktop Manager synchronization to synchronize a Blackberry 8520 with Outlook calendar, contact, memos, or tasks. I get an error 'No more message stores available.' It is Outlook 2010. I wiped the blackberry, it still did not work. I tried DM 4.7, 4.6, and 5.0, still does not work. Tried removing Outlook profile and adding it again, removing the mailbox etc. and adding it again. It is an Exchange e-mail account configured in Outlook 2010. This shouldn't really make a different though.