E2k7 oab not updating
This error occurs when users try to download Offline Address Book in Outlook.
Remedial knowledge is required for the users to resolve this Offline Address Book error. Then uncheck all your preferred boxes and click Remove. Finally, click on OK to complete disabling add-ins in your Outlook account.
so overall my initial/earlier config was good but there was bug in E2K7 SP1 which restrict CAS to access CMS share and also something was wrong with my all contact address list which restrict outlook clients to download GAL and let them download older addresses.
Also make sure the "sitefolderserver" attribute of this Default OAB is pointing to the new exchange 2007 box.
Then make sure that Mailbox stores has this OAB listed properly.
“Yesterday, I tried to download local Global Address List (GAL), also known as Offline Address Book but failed.
Even after many attempts, I could not download Offline Address Book.