Hi,
I'm trying to move an exchange 2013 on-premise user mailbox to office 365 in a hybrid environment but the process fails with following error: RecipientNotFoundPermanentException: Error: Cannot find a recipient that has mailbox GUID 'xxxxExchange Guid'.
I checked the exchange Guid for the affected user in both on premise and exchange online in powershell, but they are the same. BUT this Guid is differ from the one showed in the error message.
After this I tried to set the GUID given in the error message for the user in powershell on the on-premise exchange server but it gives me the error:
The operation could not be performed because object "username" could not be found on 'servername'.
The user is existing. Can be found In EAC and the user still uses his mailbox.
Any ideas? Can I somehow force Office 365 to use the right Guid given in both on premise and online exchange instead of using the one showed in the error message?
Thank you in advance.