After migrating Exchange 2013 to Exchange 2019, users started complaining that they were not able to download Offline Address Book(OAB).

When trying to manually download Offline Address Book from Outlook (Send and Receive), it displayed the following error: ” (0x8004010F) : ‘The Operation failed. An object cannot be found.”

Resolution:
1. Login to EAC, click on the server tab,nd click databases and Highlight your mailbox database and then click on the edit button.
2. Select client settings and click on the browse button.
3. select Default OAB and click ok
4. GlobalWebDistributionEnabled was false

Get-OfflineAddressBook | FL will display:
GlobalWebDistributionEnabled : False
WebDistributionEnabled : False

Set the flag to true:
Set-OfflineAddressBook -Identity “Default Offline Address Book” – GlobalWebDistributionEnabled $True

Get-OfflineAddressBook | Update-OfflineAddressBook or

Wait for 8 hours to propagate the change.