Issue with Adding Add-In to Microsoft Word in Different Versions

Question

issue I've encountered while trying to add an Add-In to Microsoft Word within the Microsoft 365 ecosystem. I have successfully added the Add-In using an XML file in the web version of Microsoft 365 and Teams doc web version, and it is functioning as expected. However, when attempting to utilize the same XML file within the desktop version of Microsoft Word and Teams, I am facing compatibility issues, and the Add-In does not seem to work properly. , I have noticed that when attempting to use the Add-In in Microsoft Word through Microsoft Teams, the authentication process is not working that I used in the application.