Hi guys...!!!
I tried to move a mailbox to O365 but appear the next message: Error: MigrationTransientException: Couldn't switch the mailbox into Sync Source mode. I executed the following troubleshooting without success:
1.- I Moved the Database of Mailbox between Servers
2.- Restart the Mailbox Server
3.- Restart the CAS Servers
4.- I tried to create a .PST file but it wasn't possible (appear the same error: Another administrator is currently moving the mailbox. The mailbox is locked.)
5.- I checked the following attributes in Active Directory: msExchMailboxMoveBatchName, msExchMailboxMoveFlags, msExchMailboxMoveRemoteHostName, msExchMailboxMoveSourceMDBLink, msExchMailboxMoveStatus, msExchMailboxMoveTargetMDBLink
6.- Executed the cmdlets Get-RemoteMailbox, New-MoveRequest, etc in Exchange Server and Exchange Online and didn't appear the mailbox move petition
Finally, I tried to create a new movement request, but it wasn't successful.
Thanks and Regards