We recently uninstalled Exchange 2016 from our Exchange environment leaving just one Exchange 2019 CU8 Exchange Server. Before removing Exchange 2016 we migrated all the Arbritration boxes including the Default Offline Address List. Since removing the Exchange 2016 server my Outlook clients can’t download the Offline Address Book (nor is the Outlook client updating automatically).
When we try to download the address book we get “Reported error (0x8004010f): The operation failed. An object cannot be found.”
However, Outlook Web Access (OWA) both on the network and off network had updated email addresses. So I know we have an active Global Address Book.
I’ve noticed in the event viewer we are getting Event ID 17004 “Generation of OAB "\Default Offline Address List (Ex2013)" failed. Dn: CN=Default Offline Address List (Ex2013),CN=Offline Address Lists,CN=Address Lists Container,CN=Florida Dept of Veterans Affairs,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=FDVA,DC=STATE,DC=FL,DC=US ObjectGuid: 394ecdf7-cfd3-404d-b88f-5abc5d4436e5”
But when I do a Get-Mailbox -database “xxx” -arbitration | FL I am getting this:
GeneratedOfflineAddressBooks : {\Default Offline Address List (Ex2013)}
…
…
Alias : SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}
So it looks like my new Exchange 2019 environment is confused about what Offline Address Book to create. I am also concerned (based on research) the “SystemMailbox{bb558c35…}” is the wrong version. If this is the case, how do I get the addresses in the old OAB (“SystemMailbox{bb558c35…}” to the new ““394ecdf7-cfd3-404d-b88f-5abc5d4436e5”?
FYI – My virtual OAB directory (i.e. E:\Exchange\Client\OAB) has a folder “394ecdf7-cfd3-404d-b88f-5abc5d4436e5” folder which matches the Event Viewer Error message.
Is there an easy way to fix this?
Please advise.
Thank you