Need to migrate Mailbox data within same tenant between two users.

"This method should effectively allow you to migrate mailbox data between users within the same tenant without any loss of information." .......

Have the team take a week to add the ability to do this within the Migration Center.

Then, it would be quick and easy like lard is greasy and not have to do all this monkey business.

It will do most anything EXCEPT transfer , copy migrate within the same tenant. Not even with using alternate alias for mailbox B.

Too much time spent changing names and shuffling menus around for end users and admins.
It makes everything harder, not easier.

They are the same:

Office365 / Microsoft Office

Azure / Encarta

Compliance Center / Purview Center

Tomato / Tomahhhto

Please and thank you.

I will try these methods.Thank you.

Hello DINUKADARSHANA,

Good day! Thank you for reaching out to the community for assistance with your mailbox migration request.

I understand the importance of ensuring that your mailbox data is successfully migrated between users within the same Microsoft 365 tenant.

It appears that you are trying to migrate mailbox data from one user to another within the same domain in Microsoft 365. Specifically, you would like to move data from one mailbox

There are a few approaches to achieve this within the same tenant, and Microsoft 365 offers flexible tools to handle mailbox migrations efficiently. I appreciate your proactive reach-out and will outline a solution that addresses both simple and complex scenarios.

Here’s a step-by-step guide to perform this migration effectively:

Using eDiscovery (Manual Migration):
This is ideal if you need to transfer data selectively or perform a one-time migration.

1. As an admin, go to the Microsoft Purview Compliance Center.
2. Set up an eDiscovery case to export mailbox data from the original user.
3. Export the data into a .pst file.
4. Import the .pst file into the destination mailbox using Outlook or the Import Service in the Exchange admin center.
5. Note: This method is useful when you need granular control over what is transferred.

Export Mailbox Data:

• Use Outlook to export the mailbox data from the source user to a PST file. You can do this by navigating to File > Open & Export > Import/Export and selecting Export to a file.
• Choose Outlook Data File (.pst) and select the mailbox you wish to export.

Import Mailbox Data:

• Log in as the target user and open Outlook.
• Go to File > Open & Export > Import/Export and select Import from another program or file.
• Choose Outlook Data File (.pst) and locate the PST file you exported earlier. Follow the prompts to import the data.

Using PowerShell and the New-MailboxExportRequest and New-MailboxImportRequest cmdlets:

If you prefer an automated process and have access to Exchange Online PowerShell, you can follow these steps:

1. Export the mailbox of the original user to a .pst file: New-MailboxExportRequest -Mailbox ******@domain.com -FilePath "\path\to\export\sourceuser.pst"
2. Import the exported .pst file into the destination mailbox: New-MailboxImportRequest -Mailbox ******@domain.com -FilePath "\path\to\import\sourceuser.pst"

• This method is recommended for bulk or complete migrations, providing a smooth transfer of all mailbox data.

Verify Migration:

• After importing, check that all data has been transferred correctly by reviewing both mailboxes.

Workaround: If you are migrating only a subset of data (such as emails, contacts, or calendar items), you may also consider Outlook's Import/Export feature:

• Export data from the source mailbox to a .pst file.
• Use the import function in Outlook to bring the data into the destination mailbox.

Additionally

• Permissions: Ensure that both users have appropriate permissions for accessing shared resources if you're using shared drives.
• Downtime: Plan for minimal downtime by performing these operations during off-peak hours.
• Backup: Always back up existing mailboxes before starting the migration process.

This method should effectively allow you to migrate mailbox data between users within the same tenant without any loss of information. I'd also suggest reviewing the permissions to ensure that both mailboxes have the appropriate access rights before proceeding with the migration.

Let me know if this resolves your issue or if you need further clarification on any of the steps.

Please understand that our initial response may not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.

Appreciate your patience and understanding and thank you for your time and cooperation. Have a great day!

Thank you for being a part of our community!

Sincerely,

Microsoft Community Moderator