About
In February, Microsoft will begin deprecating legacy Exchange online tokens. These are currently used by the Virtru O365 add-in to complete authentication. As part of this change, Microsoft is requiring Outlook add-ins that use legacy Exchange tokens to move to nested app authentication (NAA).
For more information on the changes: Nested app authentication and Outlook legacy tokens deprecation FAQ
Required Action
To ensure continued use of the Virtru O365 add-in and avoid disruption, Microsoft admins will need to approve Virtru new NAA application within their Microsoft environment. This can and should be done ahead of Microsoft's changes. To do so:
1. Head to the following link, and login as a Microsoft admin: Virtru for Outlook NAA
2. You will be redirected to the "Virtru for Outlook NAA" app. Accept
Once accepted, your entire org will be ready for the pending Microsoft changes. No end-user action should be needed.
Note: If admin approval is not completed when NAA is turned on for the tenant, depending on the security settings of the domain, users will be prompted with a similar permissions prompt when trying to access the add-in OR they may see a prompt to contact their administrator.