365 Cloud / Remote User to On Site / Premises Migration GUID Error
When attempting to migrate a user created with the hybrid configuration with the mailbox in the cloud / remote
back to the on site / premises exchange system, you receive an error that it cannot find the GUID of the user.
Sample Error:
MigrationPermanentException: Cannot find a recipient that has mailbox GUID 'bdc36774-dd81-447a-821b-ffd666bd8c59'.
--] Cannot find a recipient that has mailbox GUID 'bdc36774-dd81-447a-821b-ffd666bd8c59'
Running the following will show the mismatched id's.
Source
On Site Exchange Shell:
Get-RemoteMailbox -Identity <user@domain.com> | fl *guid*
Cloud Azure Shell to Exchange:
Get-mailbox <user@domain.com> | fl *guid*
As it was not same on the Exchange ran the below command which resolved the issue:
On Site Exchange Shell:
Set-RemoteMailbox -Identity <user@domain.com> -ExchangeGuid 'bdc36774-dd81-447a-821b-ffd666bd8c59'