Outlook Desktop App AddIn Issue

Question

Hello There,

We are trying to deploy an Outlook Addin and for most part it works pretty well with Outlook Web version. However, when trying to open it on the Outlook Desktop App, we received this error:

This popout is when we are trying to Oauth.

Has anyone seen this error before and have any advice?

Thank you

Answer 1

Follow up details:

We found that our plug-in works fine with Outlook version 2002, as seen in the attached image below. The error occurs when we upgrade to outlook version 2110.

It seems that this is relating to the SSO dialog. Can you someone please advise us on this issue so we can resolve it?

Thank you very much