Hybrid Migration - "The job has been paused temporarily because the mailbox is locked."

[Danny_Fast]

Hello guys,

we are currently trying to migrate mailboxes from Exchange 2013 to Exchange Online via hybrid.

There are some mailboxes which report the following error while syncing:
"The job has been paused temporarily because the mailbox is locked."

We already tried the following:
- moving affected mailboxes to a new database (migrating from there)
- repair the affected mailboxes
- using baditemlimit parameter to create migration batch
- restarting MRS
- restarting Information Store service
- editing timeout paramters in MRS config

This is not happening for all mailboxes! 
Thus it shouldn't be a firewall/network problem I guess?

Any idea what might be going on here? MS support was not able to help us so far.

[#2]

Hello Danny

Sorry to hear you had issues with the migration. I was wondering how you solved the lock problem as I am having the same dificulties at the moment and tried the same "solutions" as you did back then.

Thanks & have a great day.

Thomas

@Danny_Fast