We are running a mixed environment with Exchange 2007/2010 and Outlook XP/2010. The problem we have is that we cannot download the Offline Address Book. In the log files we can see that some users can download the OAB.
We have tried different things to solve this problem:
Run a program called OABValidate 2 on the Exchange 2010 servers. We got some errors with users pointing to Deleted objects. We fixed them.
We have deleted all OAB related files on the 2010 servers and regenerated the OAB.
We tried to create a new OAB but I cannot download it. I get an error message that says: receiving error (0x8004010F). When I change back to the default OAB I can download it.
I could not download the OAB but when I added my account as a domain admin it downloaded the OAB.
When I removed myself from the domain admin group it still works.
I added another user to the domain admin group but for him it does not work.