I just migrated from Exchange 2003 to Exchange 2007 w/all Service Packs and updates. My end users with this problem are running Windows XP SP2 and SP3 and Outlook 2007 (which they have been using for nearly 6 months.) Outlook was originally setup to run in Exchange Cached Mode with Exchange 2003, since my mailbox move to Exchange 2007 I have 3 mailboxes out of 56 that won't update when Outlook is setup to run in Exchange Cached Mode. When I turn this off, the users mailboxes perform correctly. I can view all items using OWA, with no errors. The unfortunate side to this is that they are all 3 working from laptops, and need the cached mode to work offline while traveling.
At this time, I have done the following:
1) deleted the OST and recreated - no go still same problem
2) deleted the users complete mail profile and recreated with a different ost name - still no go
3) ran scanost.exe and scanpst.exe and repaired the ost and pst files associted to the mail account - still no go
4) un-installed and re-installed Office, two times w/the second being too a different folder location on the drive, and the issue still continues
Any help on this would be greatly appreciated!