SRC365 / Outlook Add-In: Your request cannot be completed due to permissions | Error 500 The given header was not found

Created by Abderrahim Ibnou el kadi, Modified on Thu, 19 Jun at 11:51 AM by Marc Chouinard

Problem

Users report error when they try to report/block a message using the Outlook Add-In.

Error sample:

Your request cannot be completed due to missing permissions.
Please contact your administrator

or

Error 500 The given header was not found

Legacy Exchange online tokens have already been turned off by Microsoft for most tenants and the PowerShell workaround has also been disabled.

Solution:

Step 1: You need to deploy new permissions using the following link;

https://login.microsoftonline.com/organizations/adminconsent?client_id=acc26595-4acf-46af-a434-52fd6ec2e791&redirect_uri=https://support.vircom.com/a/solutions/articles/48001269366

Once logged in 365 you will get the following, click on Accept

Once completed you will be redirected back to this page.

Step 2: Add-in will work again as soon Vircom update the backend server and deploy (automatically) the new SRC version. Once updated, this text will be replaced by the release date.