Showing an external WebApp in Teams tab - Authentication issue
We have some important company websites - Angular applications that are using ADAL/MSAL or no authentication at all - that our users are using very often. Currently they have the browser open + MS Teams and use both tools. I thought its nicer to show our App inside an MS Teams tab, to use Teams as a "browser" and to make life easier for our users. What I did is simply creating a test app that I deployed to our tenant. The app is having the web address to our external web app as a content-uri in a tab: Now our app is appearing in the Teams client on the left side after installation: If I launch this app our page appears a short time and then reloads for a hundred times at once. What I would expect is a redirection to the MS page to login, to get a token for the user (like it works in Chrome) I tried out different scenarios: In the Teams-Browser app: - Everything works perfectly In the Teams Desktop app - that everyone is using: - Using ADAL with redirection method => Like described above - Using MSAL with interactionType: InteractionType.Popup => Tries to open "about" in the MS store, because there is no app available. The popup blocker cannot be a problem, because I have a button for login (user interaction) so I expect a window opening where I can login, but I get this: I can never press ok - why is not a browser used? - Using MSAL with interactionType: InteractionType.Redirect => Blank page - Using an app without any authentication => Works as expected, the page is shown I am now confused why this is happening. The teams iframe does allow popups explicitly if I inspect the iframe with DevTools. Everything we want is to display one external page with MSAL or ADAL authentication enabled. Another approach I tried: Using a "real" teams App that uses SSO. Once I have the token I pass it to the iframe with a #token=ey.... Howevery, this approach also does not work and the page is blank. I think I am already to complicated in how I think. There must be an easy solution for this problem. Any proposals are highly appreciated.
