Office 365 Tenant to Tenant Migration Step by Step Guide
Updated On - 30 Dec 2020
A tenant in Office 365 is the domain account attached to the Office 365 Suite. A tenant administrator can use all the features given in the subscription. In business-merger scenarios, the mailboxes need to be moved to another tenant. The migration is not a linear process; you need to do some preparation, meet some prerequisites, and own licenses.
So, here we are going to discuss some basics that can help you migrate mailboxes from one Office 365 tenant to another. Also, here we’ll talk about how you can plan the migration.
Migrate mailboxes, public folders, & archive mailboxes from one Office 365 tenant to another using a professional Kernel Office 365 Migration Tool.
A Simple Approach to Office 365 Tenant to Tenant Migration
Stop inbound mail flow to the source tenant by changing the primary MS record to an unreachable value or by using a third-party service. As you have noted the lowest value of TTL on MX record (of primary email domain) in your preparation step, you can plan the time of this step easily.
Source tenant preparation
Before moving the Office 365 mailbox to another tenant, the primary mail domain should be erased from all objects in the source tenant.
Reset the default email address to the initial email address of office 365.
Remove all the Lync licenses from the source tenant with the help of Lync Admin Portal.
Reset the default email address of distribution lists, rooms, resources to the initial domain.
Remove the secondary email address from all tenant objects.
In the Windows PowerShell, run the command Get-MsolUser -DomainName xyz.com that will retrieve all the objects still using the primary email address or refusing the removal.
Preparing the target domain
It involves verifying the source tenant in the target domain (do one hour after the previous step).
Configure the auto-discover CNAME.
When you use AD FS, you’ll have to configure a new domain in target tenant for AD FS.
Activate the new user accounts in the target domain and assign licenses.
On the new users, set the source domain as the primary email address (done using Windows PowerShell). Also, decide on communicating the passwords to end users.
When the user mailboxes are active, change the mail routing and point the MX record to the new Office 365 email address.
Test the mail flow in and out of the target tenant.
Begin the migration
When you have 500 users or less, migrate the mail calendar and contacts separately to the destination tenant mailbox. For email migration, limit the migration by any criteria like a date.
When you have 500 users or more, use the multi-pass method to migrate the contents in multiple batches. You can migrate only contacts, calendars, and a single week of data.
Now it is time to decide on the migration method. You can also decide on the type and amount of data to be migrated. Migration can be accomplished using PowerShell scripts. However, third-party migration tools are recommended as they offer complete control over the migration.
What Expert Think About Kernel Office 365 Migration Tool?
While migrating data from one tenant to another, the last thing you would want is losing data your data. Most migration experts recommend using a reliable and secure migration tool for Microsoft 365 tenant to tenant migration because it assures you to move your data without corrupting it. Even after migration, the data will be present in the same structure and format.
Kernel Office 365 Migration tool – For a quick and easy tenant to tenant migration
Kernel Office 365 Migration is an advanced tool that is specially designed for the Office 365 tenant to tenant migration. It allows users to easily migrate every Office 365 mailbox from one tenant to another. It has some amazing features that make it the best migration tool for Office 365.
Migrates from one Office 365 tenant to another without any hassles
Allow migration of multiple mailboxes from one tenant to another
Migrate unlimited user mailboxes with a CSV file
Offer specific filters to migrate selective data
Save migration report in CSV format after complete migration
Let’s have a look at the working process of this tool:
After installation, launch software on your system.
From the home screen, click Add Source to add first tenant Office 365 account as the source.
The Office 365/Exchange window appears on the screen, enter the Office 365 account details, and select List all mailboxes using above credentials. Now, hit the Get User mailboxes button. All the Office 365 mailboxes will appear in the tab, select the specific mailboxes, and then click Add.
Once mailboxes are added to the source section, click Add in the Add Destination section to add another Office 365 tenant as the destination.
Just as with the source section, provide credentials in the destination section for Office 365 account. Make sure you add all the mailboxes for accurate migration.
After adding both the source and destination mailboxes, map mailboxes to each other and then click Set Filter and Migrate.
In the next step, select the type of destination (Mailbox, Public Folder, Archive Mailbox) and click Migrate.
The Filter Selection window will pop up on the screen; apply filters to the mailboxes if you want to, and click I am OK Start Migration.
The tool will start migrating mailboxes from one tenant to another. Once the migration is done, a notification will appear on your screen confirming the same, click OK to finish the process.
The migration report can be saved in a CSV format. This way, you can quickly perform Office 365 tenant to tenant migration using Office 365 Migration tool.
Manual methods Vs. Kernel Office 365 Migration Tool
Kernel Office 365 Migration
Migrates archive mailboxes
Migrates public folder data
Supports batch migration
Migration possible from any version of Exchange
Easy to set up the environment
Can be done by non-technical users
Is reliable and secure
A similar procedure for all migrations
Fast and accurate
Offers easy selective migration of data
The manual approach of moving mailboxes from one Office 365 tenant to another is very complicated, as it is based on PowerShell scripts. Not every user is capable of using the Shell Scripts because it requires technical expertise. So, Kernel Office 365 Migration is the best option that allows you to move Office 365 mailboxes from one tenant to another. Even non-technical users can easily migrate their Office 365 data using this tool.