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Andy_Bond's avatar
Andy_Bond
Copper Contributor
Apr 13, 2019
Solved

O365 mailbox is not provisioning

Hi folks, We have on-premises Active Directory with hosted Exchange server. Mailboxes are stored on-premises, Users are managed on-premises and synced to Office 365 via Azure AD Connect. Configurati...
exchange
office 365
  • adam deltinger's avatar
    adam deltinger
    Apr 14, 2019
    I would set this attribute to null via adsi edit on those two users, then do a sync again! The licenses are already assigned right? They need to be in order to create an online mailbox
Andy_Bond's avatar
Andy_Bond
Copper Contributor
Apr 14, 2019

Thanksadam deltinger ,

As this will clear msExchMailboxGuid  for all my users I'll need to re-assign licenses for all of them, right?

What could be other consequences of this?

 

Andy

  • adam deltinger's avatar
    adam deltinger
    MVP
    Apr 14, 2019
    I would set this attribute to null via adsi edit on those two users, then do a sync again! The licenses are already assigned right? They need to be in order to create an online mailbox
    • Andy_Bond's avatar
      Andy_Bond
      Copper Contributor
      Apr 14, 2019

      adam deltinger  Do you know the circumstances under which msExchMailboxGuid can become populated?

    • Andy_Bond's avatar
      Andy_Bond
      Copper Contributor
      Apr 14, 2019

      Thanks adam deltinger  that worked for me!

      I cleared the msExchMailboxGuid for both of mailboxes in ADSI , waited for sync and voila.

      Mailbox was provisioned straight away for one account, and for another I had to reapply the Exchange online license.

       

      It works now and Bittitan successfully synced messages for these mailboxes.

       

      Thanks!