Hello,
Just recently installed 1.17 and when I configure OAuth with Microsoft, I get to the login page and when I click Accept for the permissions requested, I get redirected to a 404 - The requested URL was not found on this server. I followed all directions for OAuth2 here:
https://docs.osticket.com/en/latest/Guides/OAuth2%20Guide.html
Was I supposed to make changes on the server itself on one of the config files? I do apologize if I missed a step or missed another post talking about this. See picture for OSticket Information:

Thanks for all you guys do on this, I love the product.