Sep 20 2022 10:16 AM - edited Sep 20 2022 10:47 AM
Hey Guys,
So we have a user who is not able to access his mailbox via outlook. But is able to access via OWA. Auto discover fails.
When checking his office 365 account, he has an E3 license assigned to the mailbox, and when clicking on the mailbox tab the following error comes up:
"The users on prem mailbox hasn't been migrated to Exchange Online, The Exchange Online mailbox will be available after the migration has completed"
I checked and the user DOES HAVE the "MSExchangeMailboxGuid" value populated in (our ON Prem) AD, that same GUID is listed in EXO as his "ExchangeGuid". The other recipient types are set as expected (remote mailbox). To be clear the user does have data in his mailbox as well, at over 1GB there are valid and recent emails.
What I don't get is why OWA works? Also, if i clear his OnPrem MailboxGUID will that cause other problems? Since that same id is currently in use by EXO.
Thanks,
Robert
Sep 21 2022 08:59 AM
@Robert Bollinger @Tony Redmond @Vasil Michev
Hey Guy's, Any ideas on this. Hoping you can assist.
Robert
Sep 22 2022 07:34 AM
@Robert Bollinger No idea. I'd involve Microsoft support. They can access data in your tenant. I can't.
Sep 22 2022 09:24 AM