Forum Discussion

Stefano Colombo's avatar
Stefano Colombo
Brass Contributor
Feb 27, 2024

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 t...
2010
2016
Exchange Server
LeonPavesic's avatar
LeonPavesic
Silver Contributor
Feb 27, 2024

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)


Please click Mark as Best Response & Like if my post helped you to solve your issue.
This will help others to find the correct solution easily. It also closes the item.


If the post was useful in other ways, please consider giving it Like.


Kindest regards,


Leon Pavesic
(LinkedIn)
(Twitter)

  • Stefano Colombo's avatar
    Stefano Colombo
    Brass Contributor
    Feb 27, 2024
    Leon ,
    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.

Resources