How to Grant Application Impersonation in Microsoft Office 365 or Exchange Server On-Premises

How to Enable Impersonation in Microsoft Office 365 or Exchange Server

Step 1: Log into your Microsoft Office 365 account.

Step 2: At left Navigation pane, click on “Permissions” (under Dashboard).

Step 3: Click on “Discovery Management” in right pane

Step 4: After clicking, a Discovery Management window will appear.:

Step 5: Click on (+) button, select “ApplicationImpersonation” and click “add” button → Click “OK”.

Step 6: Verify if under the Roles, “ApplicationImpersonation” has been added or not..

Step 7: At Members section, click on (+) button → a new window will appear, select user name & click on “add” button → click OK.

Step 8: Verify if the username can be seen under “Members” section and click on “Save” button.

Note: If you are importing all user's mailboxes at once, then you need to provide a few more permissions