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We want to implement SSO for a Custom Tab in Microsoft Teams.

I have seen new possibilities shown in the video here (The relevant part is at 24m29s). Is this available yet?

If so, is there any documentation on this?

Koen Vissers
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  • This might help too? https://learn.microsoft.com/en-us/microsoftteams/platform/concepts/authentication/auth-silent-aad – Nsevens Aug 26 '19 at 13:46
  • That documentation proposes ADAL. My question is if this is still the correct way to go about this given newer possibilities – Koen Vissers Aug 26 '19 at 14:37
  • Haven't tested it at all, but https://github.com/OfficeDev/TrainingContent/blob/master/Teams/04%20Fundamentals%20of%20Microsoft%20Teams/Lab.md#exercise3 uses MSAL. Maybe it works for you. – Nsevens Aug 27 '19 at 06:56
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    Thanks @Nsevens. But this also illustrates my issue; official documentation shows ADAL, there are multiple examples in MSAL (but also reports that it does not work), and on Build 2019 a new way of doing authentication was presented, but I cannot find any details about is. I'm looking for an insider who points us in the correct direction, so we do not have to redo everything once we are done. – Koen Vissers Aug 27 '19 at 08:06
  • @Nsevens we followed the instruction in the link you said. But we we are not gettig back a token from acquireTokenSilent and/or acquireTokenPopup. The callback from msal is not being received. My colleague asked about this (https://stackoverflow.com/questions/57605184/not-able-to-use-identity-platform-within-iframe-ms-teams-custom-tab). Conclusion is that this is related to https://github.com/AzureAD/microsoft-authentication-library-for-js/issues/222. – Koen Vissers Aug 27 '19 at 08:46
  • Just been testing the same thing, and indeed, the acquireTokenSilent seems to fail :( I've seen the issue pop up as well at https://github.com/AzureAD/microsoft-authentication-library-for-js/issues/899 They're targeting release for end of september. Let's hope it works fine by then... – Nsevens Aug 28 '19 at 08:18
  • @Nsevens "They're targeting release for end of september. Let's hope it works fine by then.." I could not find that information anywhere. Could you share where you have seen the release date for this particular feature? – Koen Vissers Aug 30 '19 at 14:43
  • https://github.com/AzureAD/microsoft-authentication-library-for-js/issues/504#issuecomment-521039037 maybe too optimistic to go by, but it's all I have ;) – Nsevens Sep 02 '19 at 09:32

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