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Microsoft Dynamics CRM (Archived)

CRM 2013 on-premises - Removing Mailbox - Changing mailbox of a user

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Hi everyone,

Someone in my organization made a mistake and created an additional mailbox for a User who already had one.
Now i have:

1 User

1 Queue

2 Mailboxes...

The Queue and The Mailbox point each to a different mailbox.

I want to remove one of the mailbox but each time i get the message "A mailbox associated with a user or a queue cannot be deleted".

In the mailbox form you cannot change the regarding (i try to add code in the form to put null without result). In the User form the Mailbox Field is locked (i use code to force reactivation of the field but without result).

In the SQL I changed in the systemUserBase table the Defaultmailbox field to the other GUID, which worked prefectly, but i get the same message trying to remove the Mailbox from the CRM.

Any other id?

Any Help would be greatly appreciated ;-)

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  • Suggested answer
    Satish Tiwari - CRM Profile Picture
    on at

    Do not make any direct SQL modification(s) as it will make your CRM environment Unsupported.

    Have you tried deactivating one of mailbox from CRM ? And, if it doesn't work than try replacing email id of one mailbox to any other dummy/test AD account (first add this user in CRM) and let us know if it works.

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