How to Fix the Exchange Impersonation Error When Migrating to Google Workspace from Microsoft 365

ERROR: Exchange Impersonation error. Unable to open user mailbox due to impersonation error. Please make sure impersonation is set properly. (11021)

Moving to a new business email service provider can be a daunting task. There are a lot of factors to consider, such as the cost, the features, and the user experience. For many businesses, the decision comes down to two of the most popular providers: Microsoft 365 and Google Workspace.

Both Microsoft 365 and Google Workspace offer a wide range of features and benefits, making them ideal for businesses of all sizes. However, one of the biggest challenges when migrating from one provider to another is the impersonation error.

The impersonation error occurs when the user account that is being used to migrate the data does not have the correct permissions to access the Exchange server. This can prevent the migration from completing successfully.

However, there’s a simple solution to this issue. By following the steps outlined below, you can resolve the problem and proceed with your email migration seamlessly.

1. Access the Office 365 Exchange Admin portal by visiting the following URL: https://outlook.office365.com/ecp
   
   
   
2. Navigate to the Admin Permission section and click on ‘Add role group’ under the Admin role.
   
   
   
3. Provide a name and description for the role group. For instance, you can name it ‘GSuiteMigration’ or choose any other suitable name. Leave the Write Scope as default and proceed by clicking the Next button.
   
   
   
4. Select the permissions ‘ApplicationImpersonation‘ and ‘ViewOnly-Configuration‘. Click on the Next button to proceed.

5. Assign the member or members that you intend to migrate by clicking the Next button.
   
   
   
6. Review all the details and configurations carefully, and once satisfied, click on ‘Add role group’ to create the Admin role for the account.
   
   
   
   
   

By following these straightforward steps, you can fix the Exchange Impersonation error and continue your email migration process without further hindrance.

If you find the migration process overwhelming or simply want the experts to take care of it for you, you can rely on the Plugmatter WPS. We offer a comprehensive email migration service that takes care of everything for you. We will work with you to understand your needs and create a custom migration plan that meets your specific requirements. To quickly and easily migrate all of your email, contacts, calendars, and tasks to Google Workspace. Feel free to talk to an expert now!