How to Migrate Shared Mailbox to Office 365 User Mailbox?

Migrating a shared mailbox to an Office 365 user mailbox can be a bit challenging, but with the right approach, it can be done smoothly. In this article, we will outline the steps involved in migrating a shared mailbox to an Office 365 user mailbox.

Step 1: Verify Permissions The first step in migrating a shared mailbox to an Office 365 user mailbox is to verify that you have the necessary permissions to perform the migration. You will need to have full access to both the shared mailbox and the user mailbox, as well as the ability to create and configure mailboxes in Office 365.

Step 2: Export Shared Mailbox Data The next step is to export the data from the shared mailbox. You can use the Exchange Management Shell (EMS) or a third-party migration tool to export the data. When exporting the data, be sure to include all mailbox items, including emails, contacts, and calendar items.

Step 3: Create the User Mailbox in Office 365 Once you have exported the data from the shared mailbox, the next step is to create the user mailbox in Office 365. You can do this by using the Office 365 Admin Center or the EMS. When creating the user mailbox, be sure to use the same email address as the shared mailbox.

Step 4: Import Shared Mailbox Data into User Mailbox Once the user mailbox has been created, you can import the data from the shared mailbox into the user mailbox. You can use the Office 365 Import Service or a third-party migration tool to perform the import. Be sure to map the fields correctly so that the data is imported correctly.

Step 5: Update Permissions Once the data has been imported into the user mailbox, the next step is to update the permissions. You will need to remove the shared mailbox permissions and grant the necessary permissions to the user mailbox. This includes adding any necessary send-as or send-on-behalf-of permissions.

Step 6: Decommission the Shared Mailbox Finally, once you have migrated the shared mailbox to the user mailbox and updated the permissions, you can decommission the shared mailbox. This involves removing the mailbox from the Exchange Server and deleting any associated objects, such as email addresses and aliases.

In conclusion, migrating a shared mailbox to an Office 365 user mailbox can be a bit complicated, but by following the steps outlined in this article, you can do it successfully. It is important to verify permissions, export the shared mailbox data, create the user mailbox, import the data, update permissions, and decommission the shared mailbox. By following these steps, you can ensure that the migration is successful and that the user has access to all necessary data.