Outlook Add-in (Basic) - Enterprise Application Installation Guide

Microsoft has announced that they will be turning off legacy exchange tokens starting in February 2025. This change requires a change to the authentication method used by all Outlook Add-in, with the new method requiring the use of Nested App Authentication. For more information, please refer to Microsoft’s Announcement.

REQUIREMENT:

The Person performing these steps must have an administrator role assignment of Application Administator, Cloud Application Administator, or Global Administator in the destination M365 tenant.

Install Outlook Add-in (Basic) Enterprise Application

1. Login to the Entra Identity Portal as an Administrative user (For Commercial Customers: https://entra.microsoft.com | For Government Customers: https://entra.microsoft.us).

2. Under the ‘Entra ID‘ dropdown in the left Navigation pane, on the ‘Overview’ page, find and copy the Tenant ID.

3. Open a new browser Tab/Window in the same session, enter the following URL while replacing the ‘{tenant_id}‘ section with your Organization’s Tenant ID.

Azure Commercial Customer URL
https://login.microsoftonline.com/{tenant_id}/adminconsent?client_id=b732bdb9-0894-4b98-966c-964969c9e67a&redirect_uri=https://outlook-add-ins.eshare.com/

Azure Government Customer URL
https://login.microsoftonline.us/{tenant_id}/adminconsent?client_id=acc4db65-1645-4587-8db5-5258c36c13e0&redirect_uri=https://outlook-add-ins.eshare.com/

4. When prompted, sign in to the M365 admin account, an App called ‘eSHARE Outlook Add-in‘ (commercial cloud) or ‘eSHAREGov Outlook Add-in‘ (government cloud).

5. Review the requested permissions and select ‘Accept‘ to add the application.

6. After the app has been approved, the page will be redirected to a screen indicating the eSHARE Outlook Add-in enterprise application has been successfully Installed.

7. To ensure the application was successfully installed, go back to ‘Microsoft Entra ID‘ > ‘Enterprise Applications‘, then perform a search for ‘eSHARE Outlook Add-in‘ or ‘eSHAREGov Outlook Add-in‘ and verify the application exists.