During my day to day work as a part of support organization, I work with and help troubleshoot mailbox migrations very often. One type of migrations that we see quite often is IMAP migrations. I want...
Updated Nov 21, 2023
Version 5.0
Blog Post
Mihai_Grigoruta
Microsoft
MicrosoftCarolus2020 If you want this investigated I would suggest to open a request with us. If you have similar number of items between source and target then you should be fine. To get item count in target mailbox use Get-MailboxStatistics user@domain.com
Normally that error is because, most likely, there already is a sync request present for this mailbox so you will have to remove the old batch and also maybe use powershell to check if a sync request is present and remove it:
- To get more details on the sync request and maybe the error use:
Get-SyncRequestStatistics -Mailbox user@domain.com -IncludeReport -DiagnosticInfo "verbose" | fl
- To remove the sync request if it got stuck you can use this command:
Get-SyncRequest -Mailbox user@domain.com | Remove-SyncRequest
After this if you still need to check the error, create a new migration batch.