Microsoft is making a big push to migrate people’s email to Office 365. The company offers free migration and will offer incentives like discounts on their cloud services for those willing to make the switch. While this sounds great, some customers are already arguing that Microsoft has an unfair advantage with its virtual lock-in practices…
The “office 365 migration tool free” is a command-line tool that allows users to migrate their mailboxes to Office 365.
You want to migrate a mailbox or a group of mailboxes to Office 365, but they’re on-premises. There are, nevertheless, critical procedures to take before beginning a move. This article will walk you through the process of migrating mailboxes from Exchange on-premises to Exchange Online.
Introduction
It’s a good idea to do the following before you start migrating mailboxes to Microsoft 365:
- In Exchange, understand the difference between New-MigrationBatch and New-MoveRequest.
- Use the Hybrid Configuration Wizard to set up your hybrid system.
- Assign Office 365 licenses to the mailboxes on-premises.
- Create a CSV file with mailbox rights.
- Export permissions for mailbox folders to a CSV file.
- To speed up the transfer, disable EWS throttling in Office 365 – Exchange Online.
*If you’re just migrating a single or a few mailboxes, you don’t need to stop EWS throttling in Office 365.
CSV file for Exchange on-premises mailboxes
Create a CSV file containing the on-premises Exchange mailboxes you wish to transfer to Exchange Online by following the instructions below.
Exchange on-premises mailboxes may be exported to a CSV file.
Access the Exchange Admin Center by logging in. Select Recipients > Mailboxes from the drop-down menu. To export data to a CSV file, go to the more button in the toolbar and choose Export data to a CSV file.
EMAIL ADDRESS should be checked. Click the Export button.
By default, the CSV file will be downloaded to the Downloads folder. If you get a prompt, make sure you save the CSV file.
The CSV header will be edited in the following step.
Before uploading the CSV file in the following step, you must first modify it. If you don’t do it, the upload will fail and an error will appear.
Rename ExportData.csv to MigrationBatch01.csv in the file.
Pay close attention to the CSV header and make any necessary changes. Remove the gap between EMAIL ADDRESS and EMAIL ADDRESS.
It should resemble EMAILADDRESS. Save the document.
In a CSV file, edit mailboxes.
Remove any mailboxes you don’t wish to transfer to Exchange Online from the CSV file.
Create a new migration batch and upload the CSV file after that.
Migrate on-premises mailboxes to Office 365
To migrate mailboxes from on-premises Exchange to Exchange Online in Office 365, follow the steps below.
To migrate mailboxes, create a migration batch.
Log in to the Admin Center for Microsoft 365 Exchange. To add a migration batch, go to Migration > Add migration batch.
Assign a name to the new migration batch. MigrationBatch01 is the name of the batch in our case. Choose the Migration to Exchange Online mailbox migration route. Next should be selected.
Select Remote move migration as the migration type. Next should be selected.
Next should be selected.
Choose a destination for migration. Endpoint for Hybrid Migration – EWS (Default Web Site).
The migration endpoint was set up using the Hybrid Configuration Wizard.
To migrate, you may choose to manually add users. Locate and add the users who will be migrating to Office 365.
If you have a situation where you need to manually add people to migrate, the opportunity to do so is fantastic.
- Migrate a single Exchange on-premises mailbox to Office 365
- A few Exchange on-premises mailboxes will be moved to Office 365.
If you’re migrating a large number of mailboxes to Office 365, you’ll want to go with the CSV file option.
Choose Migrate from a CSV file from the drop-down menu. Navigate to the CSV file you exported in the previous step. Next should be selected.
Choose the delivery domain that you want to use. Next should be selected.
The following steps are included in the Schedule batch migration step:
- Add the mailbox where the batch completion report should be sent.
- Select Start the batch automatically.
- Manually finishing the batch later is selected.
- Save the file.
Note: Choosing the Manually finishing the batch later will sync the mailboxes to 95% of their original state. After then, a delta sync will happen every 24 hours. Then you may pick when to finish the mailboxes. This is a great approach to finish the migrating batch late at night or on the weekend.
The batch has been created successfully. After that, click Done.
Examine the status of the mailbox relocation.
In the list view, choose MigrationBatch01.
To gain additional information about the mailboxes relocation, click View details in the details window.
The validation of mailbox move requests will be the initial step. The status will then change to Syncing or Failed. The Refresh button is always available.
Allow enough time for it to display the mailbox data consistency score, the number of synchronized mailbox items, and the things that were skipped.
Select a mailbox that has completed the synchronization process.
To find out why the status failed, click on the failed mailbox.
In this case, it demonstrates:
Error: MigrationPermanentException: You are unable to use the domain because it is not one that your organization accepts.
Another possible problem is: Target mailbox does not have an SMTP proxy matching.
Refresh and ensure that all mailboxes are in sync with Microsoft 365/Office 365 after repairing the failing mailbox. Everything seems to be in order for the migration batch to be completed.
Note that getting mailbox status using Microsoft 365 Exchange Admin Center takes longer than collecting mailbox status via PowerShell. We suggest using PowerShell to check the progress of your mailbox migration.
You’ll finish the mailboxes in the migrating batch in the following step.
Continue reading: Check which Office 365 mailboxes are in sync »
Batch movement of mailboxes
In the list view, choose the migrating batch. To begin the process of completing mailboxes, click Complete migration batch.
Note: The Microsoft 365 Exchange Admin Center does not allow you to finish individual mailboxes, however PowerShell allows you to do so. Complete individual mailbox migration requests from the migration batch.
The status of the mailbox migration will be changed to Completed.
The migration batch completion status will be verified in the next and final step.
Verify that the migration batch is complete.
Batch migration Completed without any mistakes. In the details pane on the right side, you can see whether all of the mailboxes have been completed or failed. Eleven mailboxes failed in our scenario because they were already housed in the target database. If you’re still having problems, look into it more.
Office 365 mails have now been properly transferred from on-premises servers. In addition, the migration report is sent to the email address you specified in the previous stage.
Continue reading: Use PowerShell to complete a migration batch »
Conclusion
You learnt how to move on-premises Exchange mailboxes to Office 365. To begin, export the mailboxes to a CSV file from the Exchange Admin Center on-premises. Then, from the CSV file, delete the email addresses you don’t want to transfer.
Remember to change the heading and save the CSV file. If you don’t, an error message will show when you try to upload the CSV file. In Microsoft 365 Exchange Admin Center, create a new migration batch and upload the CSV file. Keep a close watch on the migration’s progress.
Did you find this article to be interesting? For further protection, you may want to add a tag to external emails in Microsoft 365. Don’t forget to subscribe to our newsletter and share this content.
Watch This Video-
The “office 365 tenant to tenant migration without tool” is a process that can be done by users on their own. This process will allow users to migrate mailboxes from Office 365 to Office 365.
Frequently Asked Questions
How do I move a premise mailbox to Office 365?
A: You will need to export it as a PST file, and then import that into Office 365. This is because Microsoft does not allow for exporting a premise mailbox from the Office Outlook client or desktop version of Exchange Server.
Can you migrate a shared mailbox to Office 365?
How do I transfer my Exchange 2013 mailbox to Office 365?
A: One of the best ways to transfer your Exchange account is to use PowerShell. To run this tool, click on Run in Windows and type powershell. Press enter and then paste a command that looks like this below into the window that appears. Set-ExecutionPolicy RemoteSigned -Scope Process .
Get-ExecutionPolicy
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