Office 365 tenant to tenant migration user manual

Migrate mailboxes between Office 365 Tenants

Step-by-step guide for Office 365 Tenant to Tenant migration

Office 365 tenant to tenant migration

Pre-migration

Prior to installation and configuration of migration ensure that the source and target server environment is well prepared and it is meeting the necessary system requirements.

Step 1: Create users in Office 365 account
You should create user accounts on the target Office 365 server to which you wish to migrate and also assign the licenses to the corresponding users.
- Add users individually or in bulk to Office 365
- Add several users at the same time to Office 365
Step 2: Make sure that the required roles are assigned for the admin account which is used to connect the source Office 365 account
1. Verify for the source admin account has the below management roles assigned:
  - ApplicationImpersonation
  - View-Only Configuration
  - View-Only Recipients
  - Public Folders
  - User management administrator/Global administrator*
  Note: Assign the elevated admin role 'Organization Management' to the administrator account that is performing a Public Folder migration
2. Make sure the Global admin account has a valid, non-hidden mailbox on the source.
Step 3: Make sure that the required roles are assigned for the admin account which is used to connect the target Office 365 account
1. Verify for the target admin account has the below management roles assigned:
  - ApplicationImpersonation
  - View-Only Configuration
  - View-Only Recipients
  - Public Folders
  - User management administrator/Global administrator*
  Note: Assign the elevated admin role 'Organization Management' to the administrator account that is performing a Public Folder migration
2. Make sure the Global admin account has a valid, non-hidden mailbox on the source.
Step 4: Assign licenses in Office 365
Ensure that Office 365 licenses are assigned to all the accounts for the target mailboxes. Either you allow the tool to create the mailboxes automatically and assign the Office 365 licenses automatically.
Or you can assign licenses manually in Office 365.
Step 5: Install EdbMails Office 365 Migration
a. Download and install EdbMails on your computer. Download
b. Double click the EdbMails setup (EdbMailsSetup.exe) to install the application.
c. Follow the instructions that appear to complete the installation.
Step 6: 'Login' or 'Start Your Free Trial' to access the application
Click the 'Login' or 'Start Your Free Trial' button.

Migration process

Follow the below steps for the configuration of EdbMails Office 365 Migration:

Step 1: Select migration
Select the option 'Office 365 Migration (Tenant to tenant migration & more...)'.
Step 2: Connect to the source Office 365
Click here to connect source Office 365
Step 3: Select mailboxes you want to migrate and define target connection
Select the mailboxes for migration
Select the mailboxes that you wish to migrate.
Choose the migration type as 'Full migration' or 'Incremental migration'.
Click the 'Migrate to Destination Office 365 [Incremental]' button to continue.
Login to Destination Office 365
Login to the target Office 365 account. Click here for the detailed steps on Office 365 login using EdbMails
On successful login, you will be displayed with the list of mailboxes.
Step 4: Map source and target mailboxes
Map the source mailboxes to target Exchange server mailboxes. Click here for the details.
Step 5: Start the migration
Start the Migration Operation
Click the 'Continue' button to start the migration operation.
That's it! During migration operation, you can view the progress as shown below.

Appropriate message will be displayed on completion of the migration operation.
Click the 'View Log' button to view the migration operation log.
Login to your Office 365 account to verify migrated items such as emails, calendars, contacts etc.

Post-migration Activities

After the completion of migration please go with the below step

Change DNS records (MX, Autodiscover)

To continue the mail flow to the new environment, you should change the MX Records and also need to set up Autodiscover record for connection of newly migrated mailboxes with a mail client (e.g. Outlook). You can perform using Microsoft article. After the chagnes this can take a couple of hours.

Migrate mailboxes between Office 365 Tenants

Step-by-step guide for Office 365 Tenant to Tenant migration

User Manual