Getting Detailed Error Messages for Mailbox Moves

In Office 365 or Exchange Server 2013/2016, you can use the administration console to view information about migration batches. To find out information about failing moves, you can view the details of the migration batch and then view the report for individual mailboxes. When you view the report for a mailbox a text file is downloaded for viewing.

The report provides detailed information about how much data has been downloaded. Also, if there are errors, they are contained in the report. Unfortunately sometimes the errors are pretty generic. For example, one error I got recently was:

Transient error TimeoutErrorTransientException has occurred. The system will retry (200/1300).

Instructions on how to review the report:

• https://technet.microsoft.com/en-us/library/jj898491(v=exchg.150).aspx

Since the error was happening often, we needed to get more information. Fortunately that detail is available, but not in that report. Instead, you need to use Windows PowerShell to view the move request statistics. If you are moving the mailbox to Office 365, you need to use a PowerShell prompt connected to Exchange online.

$stats = Get-MoveRequest user@domain.com | Get-MoveRequestStatistics -IncludeReport
$moveErr = $stats.Report.Entries | Where-Object {$_.Type -eq "Error"}

This leaves you will an array named $moveErr that contains all of the errors. You can view each error by specifying an individual array item.

$moveErr[1]

In my case, I got this more detailed information in the Failure property:

TimeoutErrorTransientException: The call to 'https://hybridserver/EWS/mrsproxy.svc
hybridserver (15.1.1034.26 caps:07FD6FFFBF5FFFFFCB07FFFF)' timed out. Error
details: The request channel timed out while waiting for a reply after 00:00:30.9527011.
Increase the timeout value passed to the call to Request or increase the SendTimeout
value on the Binding. The time allotted to this operation may have been a portion of a
longer timeout. --> The request operation did not complete within the allotted timeout of
00:00:50. The time allotted to this operation may have been a portion of a longer
timeout. --> The request channel timed out while waiting for a reply after
00:00:30.9527011. Increase the timeout value passed to the call to Request or increase
the SendTimeout value on the Binding. The time allotted to this operation may have been a
portion of a longer timeout. --> The request operation did not complete within the
allotted timeout of 00:00:50. The time allotted to this operation may have been a portion
of a longer timeout.

That error information gave me enough information to start looking at timeout settings for the MRS proxy service.