Tuesday, 27 June 2017

Quick Office 365 Tenant to Tenant Migration Process Guide

As we know, Office 365 is a cloud-based email client to make the task simple and secure. Many organizations and professionals have been involved in its usage due to many unique features provided by it. Also, it offers all services that help the user to access their important documents, emails or collaborate from anywhere in the entire world. Moreover, the greatest number of cases have been reported where most of the users are not satisfied with its service. Due to continuously increasing errors and other complications, many users prefer to perform Office 365 tenant to tenant migration.

Consider the following scenario that helps to understand the migration more clearly:

“My company currently have the set up of two Office 365 accounts, each has a separate domain. Now, I want to migrate one of those domains of this account to a new tenant keeping the original name of the domain. Therefore, I want to learn that how can I move a domain from one Office 365 account to another".

After considering the above scenario, further, we will discuss two manual solutions to transfer Office 365 Mailbox to Another Account accurately.

Two Ways to Perform Office 365 Tenant to Tenant Migration Process

Manually Merge Office 365 Tenants
  • To start the transferring of office 365 mailbox to another account, users have to do such things given below:

Preparation of Tenancy and Licensing for Office 365 Tenant to Tenant Migration

  • • First of all, increase licenses in target O365 tenant for providing the accommodation to all mailboxes that will be moved from a source tenant.
  • • Create an Administrator accounts in both source and target domain, which is used to migrate emails from one Office 365 account to another. For optimizing the data throughput, few migration tools will be required more than one admin profile in the source domain.

Preparing the Source Tenant

The primary domain should remove from each object in the source tenant before the domain will be transferred to the target domain.

  • • If the users have set up their domain with a SharePoint Online public site, then, before deleting the domain, first they have to set up the website's URL back to its initial domain.
  • • With the Lync, admin have to eliminate all Lync licensing from the users within the source domain
  • • Reset all the default email addresses on Distribution Lists, Rooms, Resources, Office 365 source mailbox to an initial domain.
  • • Using Windows PowerShell script Get-MsolUser -DomainName to retrieve all the objects that still, using the remove blocked sites and tenants.

Prepare Target Tenants

  • • Configure the Autodiscover records (Internal or External) optional.
  • • If the users are using AD FS, then, set up a new domain on the target tenant for AD FS.
  • • The verification test of mail flow to or from the new mailbox in the target tenant will be performed.
  • • When using Exchange Online Protection, to recreate the connectors, transport rules, white or black lists from the source tenant.

Use PowerShell Script to Perform Office 365 Tenant to Tenant migration

Now, use the PowerShell commands for the migration as discussed below:

Reset the MS Office 365 Bulk Password

  • • Initially to create a CSV file named as password.csv.
  • • Then, insert “upn” and “newpassword” columns in this particular file (For e.g. xyz@joseph.com,Password1)
  • • Use the following Windows PowerShell script:

Copy all O365 accounts with the desired proxy address into the CSV file

Create Bulk Mailboxes in MS Office 365

Delete Secondary Email Address from Mailboxes in Bulk


The above-stated method is quite confusing and seems to be very difficult for those who do not have much knowledge related to technical things. This method is very lengthy and time-consuming process which become quite an annoying situation for multiple users. Thus, it is advisable to take the help of trusted party utility for performing the Office 365 tenant to tenant migration with accurate results.

Proficient Way to Move Office 365 Domain to New Tenant

Apart from the manual approach, the users can prefer an automated solution i.e. Office 365 to Office 365 Migrator. This application allows to transfer Office 365 Tenant Mailbox to another account tenant domain. It provides email filtering and pause & resume option to migrate the entire process. However, it can also export the selective data items that may be checked or unchecked respectively. It will support all version of Windows OS.

Wrapping It Up

Office 365 is one of the most leading email client application that will be used by multiple organizations for maintaining the workflow. This platform is a secure place for the storage of crucial data of a company. After considering the scenario to migrate from one Office 365 tenant to another that we have described along with two solutions for the same. The users can use any method according to their comfort. Else, the users can opt an alternate approach i.e. Office 365 to Office 365 Migrator to perform the Office 365 tenant to tenant migration process.


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