Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
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What is the reason for this
Cross Tenant Migration Error - GUID
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Auon Ali Khowaja
0
Reputation points
I am getting an error during the migration.
The user object for 'xxxxx' does not have a valid ExchangeGuid property and cannot be migrated.
Exchange Online
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Aholic Liang-MSFT 13,921 Reputation points Microsoft External Staff2023-02-13T08:10:47.4233333+00:00 Hi @Auon Ali Khowaja ，
Just checking in to see how things are going on with this thread.
If the reply was helpful, you can click the "Accept Answer" button under this post so that other's with similar question can benefit from this thread as well.
If you still have further questions or concerns, feel free to post back.
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3 answers
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Amit Singh 5,321 Reputation points2023-02-16T02:50:24.84+00:00 From the Exchange Online session, use the following command to manually set the GUID to match the on-prem one.
Set-MailUser -Identity ******@domain.com -ExchangeGUID xxxxxxxxx-xxxxxxxxxxxxxxxxxxxxOnce this command completes, you can use the Get-MailUser command again to check if the changes have been written to Azure AD.
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Aholic Liang-MSFT 13,921 Reputation points Microsoft External Staff
2023-02-10T05:02:21.3533333+00:00 Hi @Auon Ali Khowaja ，
Cross-tenant migration requires that the mail user in the target tenant has the same user mailbox as the source tenant . You can follow these steps to set the mail user's ExchangeGuid:
1.Connect to the Exchange online PowerShell of the source tenant and refer to the following command to get the ExchangeGuid of the specified user mailbox:
get-mailbox userone |fl *guid2.Copy the ExchangeGuid as a backup
3.Connect to the Exchange online PowerShell of the target tenant and refer to the following command to set the ExchangeGuid of the specified mail user:
set-mailuser userone -ExchangeGuid 89bd6765-xxx-40xxx-a21a-1ccxxx92187
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Auon Ali Khowaja 0 Reputation points2023-02-13T12:11:21.4566667+00:00 I have tried some other things and it got sorted. Thanks for your suggestions as well.
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Aholic Liang-MSFT 13,921 Reputation points Microsoft External Staff
2023-02-28T04:48:15.01+00:00 Hi @Auon Ali Khowaja ，
If it has been resolved, please click "Accept as answer" to close this thread or share your solution, your action would benefit others who have similar issues.
Thank you for your understanding!
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