Forum Discussion
Stefano Colombo
Feb 27, 2024Brass Contributor
Delegated user missing after mailbox migration
After migrating a user mailbox from exchange 2010 to Exchange 2016, on premise, we found that Mailbox Delegation setting was missing the delegated users but only has the "defaults".
Is it possible that it's due to the fact that the delegated user mailbox was still on exchange 2010 ?
- LeonPavesicSilver Contributor
Hi Stefano Colombo,
you can try to reapply permissions:
- Try removing the delegated user's permission to the mailbox and then reapplying it.
[SOLVED] Unable to Access Delegated Mailbox after Migrating to Exchange 2016 (spiceworks.com)- Stefano ColomboBrass ContributorLeon ,
the problem here is not to reapply the delegation later but understanding why they were removed.
It's not feasible to go, manually, after all the migrated mailbox to restore the delegation settings.
Most important we don't know all the delegation for all the mailboxes we have to migrate.