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I am busy migrating from On-Prem 2010 to Exchange Online
Multiple mailboxes failed
Error: MigrationPermanentException: An error occurred while running New-MoveRequest -ExecutingIdentity -WhatIf -BatchName -MigrationMailbox -SourceEndpoint -MigrationBatch -MigrationUser -CompleteAfter -RemoteHostName -RemoteCredential -IgnoreTenantMigrationPolicies -Remote -InternalFlags -Identity -IncrementalSyncInterval -TargetDeliveryDomain : Value cannot be null. Parameter name: fqdn --> Value cannot be null. Parameter name: fqdn*
As your issue is more realted to Exchange, I would modify the tag to be "office-exchange-online-itpro".
Thanks for your understanding.
Hi
What worked was we stopped the iis service on exchange on prem, this resolved the issue
Thanks
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Hi @Roelof Stoltz ,
I am glad to hear that your problem has been resolved, and thank you very much for the solution you shared.
If you can, you can mark your solution as an answer to help users in the community who have the same problem. This will help more people.
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Hi @Roelof Stoltz ,
I've converted your reply from "comment" to "answer", so that if you don't mind, you can click the "Accept Answer" button under your post. This can make it easier for others who encounter a similar issue to see the useful information when reading this thread. Thanks for your understanding.
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Hi @Roelof Stoltz ,
How did you migrate mailboxes in Exchange 2010 to Exchange Online? If you use the command line, which specific command line do you use to complete the migration operation?
When trying to migrate, will all mailboxes fail or will only specific user mailboxes fail when migrating?
1.Have you tried using the method provided in the following official article to migrate user mailboxes? If not, please try.
Please refer to: Move mailboxes between on-premises and Exchange Online organizations in hybrid deployments
2.In addition, you can also try to run the following command line to collect information about user mailbox migration. Check whether there are specific errors that caused the mailbox migration failure, especially the "report" and "Diagnostic" parts. If possible, please share the results with us. But it should be noted that in order to protect your personal privacy, please overwrite your personal information.
Get-MoveRequestStatistics -Identity "user mailbox address" -IncludeReport -Diagnostic | fl
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