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Option #1: Migrate Microsoft Teams from one tenant to another manually

Migrating Microsoft Teams data to another tenant manually involves multiple steps and a ton of heavy lifting on the part of IT.

Technically, there’s no easy, out-of-the-box way to migrate Microsoft Teams between Microsoft 365 tenants. But you can move some of the underlying components, such as the files stored on the associated team SharePoint site and group chat and channel conversation history stored in the team’s Exchange mailbox. While there are a few different ways you can go about doing this, we’re going to walk you through one of the most straightforward methods that doesn’t involve any third-party tools.

To migrate your Microsoft Teams to another tenant manually, you need to:

Re-create the teams you want to migrate at the destination

Add all of the correct users and permissions to each team

Download the contents of the associated SharePoint team sites and upload at the destination

Export conversations from the team’s Exchange mailbox, then import them at the destination as a document

Step #1: Re-create the teams you want to migrate at the destination

Before you copy any Teams content, you need to create teams in your new Teams environment so that content has a destination.

Essentially, this means re-creating the structure of your source Teams—including the channels and tabs within each team. Sound time consuming? That’s because it is. But you’re only getting started.

Step #2: Add all of the correct users and permissions to each team

Once you have the scaffolding set up in your new Teams environment, you need to populate it properly. That means adding all of the correct users and permissions to each team.

Assuming you followed migration best practice, you should already have all your users added at the destination Azure Active Directory. So what you’re really doing in this step is inviting users to join the same teams they were members of in the old Teams environment.

To invite bulk users to a Microsoft Teams team, you need to:

Extract users/permissions to a CSV file

Modify the domains associated with each user

Add users to the destination teams from the CSV file

Modify permissions within each team

Extract users/permissions to a CSV file

I hope this is helpful!

Matt Henry