The other day I installed Office 2010 for someone, after a clean installation of Windows 7. Everything was working just fine except when I installed BlackBerry desktop manager, it refused to recognize Outlook 2010 as a valid Personal Folders source. I don’t remember the exact error message, something like it couldn’t find a valid data store, but it certainly wasn’t working. BlackBerry support offered no assistance as Office 2010 isn’t released yet, and I didn’t want to wait for an answer on the Microsoft Connect newsgroups.

Anyways, the solution turned out to be to first install an older version of Office, sync the BlackBerry once, and then upgrade Office 2010, not using the automatic upgrade, but by choosing the manual option and simply checking all the checkboxes. The BlackBerry now happily works with Office 2010, and my colleague is happily syncing away.