It is called syncing and when the batch migration is in the final stages then it denotes its status as syncing.
Exchange mailbox migration stalled.
Exchange 2016 we have cu8 in place utilizes throttling on move requests as well.
There comes a time where an exchange server has done it s time and a migration to a new server is in the pipeline.
The request has been temporarily postponed because datamovereplicationconstra int is not satisfied agent ca.
To find out the actual state of the move we need to open up the ems exchange management shell and type the following command.
This happens when the threshold for certain resources has been reached.
Have you tried to restart the exchange server to test.
This might happen if there are any issues in the disk performance causing disk latency.
Restart the mailbox replication service.
Some stalled move request errors are straight forward and highlight an existing problem.
No it will interrupt the migration process which is already stalled.
But in some cases when the size of the mailbox is too large or the receiving office 365 mailbox does not have proper permissions then syncing is stalled and the migration will be stuck for an unlimited period.
A new server or a new virtual machine is created and setup to the right specifications and all updates are applied.
If you are reading this you have certainly noticed a stalled move request at times.
In the top ribbon select admin and then select exchange.
The most recent stalled migration please note there are no errors on the migration job and no errors related to exchange server or the migration job in any event logs has the following message.
It can take a few minutes time for a coffee but check and the process should now have resumed copyingmessages.
The response time from the source is getting high and the migration batches are getting timed out.
Try using smaller batches.
Completing individual move requests from a migration batch.
But the actual live mailbox remains on the source server until the process is successfully completed anyway.
On the select the users page select the mailboxes you want to move to the cloud.
Small batch migration could be the best approach to deal in such situation.
After we run this command we can see that the state is in fact queued and not syncing as per the above screen shot naughty microsoft.
Error solved mailbox export stalled due to source disk latency.
A migration between exchange server and office 365 is considered completed after all the messages from the source mailbox are transferred to the destination mailbox.
Delete the migration task and recreate.
On the enter on premises account credentials page.
