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CatherineJaszewski-5685 asked CatherineJaszewski-5685 commented

Exchange 2019 error 17004 on creating Offline Address Book

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

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Correction - When I do Get-OfflineAddressBook | fl i get the SystemMailboxbb558c35...with the GUID of “394ecdf7-cfd3-404d-b88f-‎‎5abc5d4436e5”...
So its not two separate OABs.

How do i get Exchange to create the offline address book/

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1 Answer

KaelYao-MSFT avatar image
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KaelYao-MSFT answered CatherineJaszewski-5685 commented

Hi, @CatherineJaszewski-5685

Sorry I need to ask several questions to get some more information:
1.Does the problem occur only on external clients(not domain-joined) ?
2.If you run a Get-OfflineAddressBook | Update-OfflineAddressbook command via EMS on your Exchange server, will it return any error messages?
3.What's the size of the folder "394ecdf7-cfd3-404d-b88f-‎‎5abc5d4436e5"?

And would you post a screenshot or in text of the event ID 17004? Since the main post didn't contain the detailed error message.
( Please don't forget to hide your personal information for security)

As a workaround, I suppose that you may also create a new offline address book and apply it to the databases, see if it works fine.

Please run the following commands via EMS:

  New-OfflineAddressBook -Name "newOAB" -AddressLists "\Default Global Address List" -VirtualDirectories $Null -GlobalWebDistributionEnabled $True    
 Set-MailboxDatabase -Identity <database_name> -OfflineAddressBook "newOAB"

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Hi, @CatherineJaszewski-5685

I am writing here to confirm with you how thing going now?
Did the issue get resolved?

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Yes....The issue is resolved. I ended up simply removing the Offline Address Book and recreating it.

thank you for your help.

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