Cross Tenant Mailbox Migration: Microsoft 365 Tenant to Tenant Mailbox Migration

#office365concepts #m365 #migration #exchangeonline #office365

In this video, we'll walk you through how to migrate mailboxes from one Microsoft 365 tenant to another. Migrating a mailbox from one Microsoft 365 tenant to another can be a challenging task. However, with the help of this video, you will be able to migrate your mailbox without any Issues! By the end of this video, you'll know how to migrate a mailbox from one Microsoft 365 tenant to another Microsoft 365 Tenant.

Commands:
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Invitation Link:
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# Create Migration Endpoint
$dehydrated=Get-OrganizationConfig | select isdehydrated
$AppId = "Migration Application ID"
$Credential = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $AppId, (ConvertTo-SecureString -String "Password copied in previous step" -AsPlainText -Force)

# Create Organization Relationship
$sourceTenantId="Tenant ID of Source Tenant"
$orgrels=Get-OrganizationRelationship
$existingOrgRel = $orgrels | ?{$_.DomainNames -like $sourceTenantId}
If ($null -ne $existingOrgRel)
{
Set-OrganizationRelationship $existingOrgRel.Name -Enabled:$true -MailboxMoveEnabled:$true -MailboxMoveCapability Inbound
}
If ($null -eq $existingOrgRel)
{
New-OrganizationRelationship "Name of organization relationship" -Enabled:$true -MailboxMoveEnabled:$true -MailboxMoveCapability Inbound -DomainNames $sourceTenantId
}

#Prepare Source tenant
$targetTenantId="Tenant id of the Target Tenant"
$appId="Migration Application ID"
$scope="Name of the Security Group"
New-DistributionGroup -Type Security -Name $scope
$orgrels=Get-OrganizationRelationship
$existingOrgRel = $orgrels | ?{$_.DomainNames -like $targetTenantId}
If ($null -ne $existingOrgRel)
{
Set-OrganizationRelationship $existingOrgRel.Name -Enabled:$true -MailboxMoveEnabled:$true -MailboxMoveCapability RemoteOutbound -OAuthApplicationId $appId -MailboxMovePublishedScopes $scope
}
If ($null -eq $existingOrgRel)
{
New-OrganizationRelationship "name of your organization relationship" -Enabled:$true -MailboxMoveEnabled:$true -MailboxMoveCapability RemoteOutbound -DomainNames $targetTenantId -OAuthApplicationId $appId -MailboxMovePublishedScopes $scope
}

#Create migration batch

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[javiergroning]

Excellent!!! The best of all the videos I've seen. Clear and concise. Thank you!!!!

[Chalamusafir]

At 9:31 -- used the wrong syntax due to which any other preexisting proxyaddress got removed.
at 9:59 and 11:03 LEDN is not showing as updated coz LEDN from source is added as Proxy to Target Mailuser.

Let me know if I am wrong or missed something

Just learning

[YahkoobAyappally]

I believe there is small mistake in the script running in Source Tenant.

If we are creating mail enabled security group manually, then no need to include the script new-distributiongroup command line. It’s repeating the step

[anthonymeintjes]

This went smoother than the last video I watched. If only I could see what mailbox it is syncing from and to to make sure it is correctly set up

[mohammedkhizar]

Excellent explaination step by step ...much appreciated ur hard work for preparing this video.

[late]

Hey @Office365Concepts, at 9:30 to 11:00, your two LEDNs did NOT update. They don't update when I tried that command on my system, too.

[ismailsouit]

The best explaination reguarding Tenant to Tenant migration

[santhoshshashi]

Thank you sharing the video. Today i learnt new things. ❤

[AnkitProGamingYT]

Great Insight! Loved all the videos
Could you please confirm which service is used when we perform Cross Tenant Migration?
Like we have Outlook anywhere for Cutover and MRS Proxy for Hybrid, but which service is used in Cross Tenant Migration?

[prassanna]

WOW!Excellent video and gain lot of knowledge on from this thank you, can you please upload a video about migration troobleshooting also that helps a a lot for everyone...

[ValentinoMariotto]

great guide. But what about the "Cross Tenant User Data Migration" special add-on license that is mentioned in the official Microsoft tutorial?

[nobody-P]

Such an extraordinary explanation... THank you, Sir...

[jollybuoytech]

While creating source to target relationship, Creating another distribution group will give an error as there is already a mail enabled security group with same name existed.

[thalablack]

Thank you bro for quick and easy explanation.
Could you pls provide more details about prerequisite, outlook configuration, keypoints /challenges in tenant to tenant migration

[Nawinsana]

Thank you Sir! The video was well explained. Please make more vides on Exchange, Onedrive, Sharepoint Migration

[aadilshaikh]

How migration end point created that step is skipped and in cross tenant migration we need to create a mail enabled security group not security group which u did but not sure why instead of MESG u just mentioned SG.
Apart from that very knowledgeable and informative
Thanks

[supersadman]

Hello,
I would like to migration only 5 mailboxes while other 10 mailboxes are keep in source tenant. is it okay or not?

[ChandanKumar-hgeq]

Excelent explanation.
Thank you!
Please suggest can we use this method for migration of single domain users from one tenant to another.

[adalidaborip]

There is a reason I can't see "Migration" in my Microsoft365 admin center menu?

[hengloongaw]

Hello Sir.. Does this migration included SharePoint, Teams and etc? I actually sourcing out how to do tenant to tenant migration .