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Teams client for Mac OS can't sign in with ADFS when forms and Windows auth is enabled

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Jared Dean
New Contributor

I have noticed that with the Teams client on Mac OS that adfs sign in fails when both forms and windows auth is enabled.  However, when it is just forms auth enabled for ADFS the Teams client successfully authenticates on Mac OS. 

 

Please fix this as our internally accessible portion of ADFS has both forms and windows auth enabled and we cannot expand our testing of the Microsoft Teams service to a larger group as we have Mac users scattered throughout our organization.

6 Replies

Hopefully adding some more weight to this. We are considering moving from Slack to Teams, but we have many Mac users, and this is an absolute block from us migrating.

The steps to reproduce this is to open up Teams, type in your email account (Teams asks if this is a personal or work account, click work), it tries to navigate you to the work's login page, and then you get the 401 error.

 

For what it's worth, Teams works fine on the iPhone app.

They fixed this issue with one of the February updates to the Teams client for Mac.  Wasn't listed in the release notes specifically but our Mac clients are working now on our internal side of ADFS with both forms and Windows auth enabled.

Don't know what's different in our setup then, as we have the latest version of Teams, but we still are having the issue. 

Our current "workaround" is to;
1. Fill in our email address,
2. Let Teams take you to where you're supposed to sign in,

3. Let it fail, and close the window that contained the error,

4. The second Teams window that was hiding in the background will now provide you with a second log in page, fill that one out with the same details.

5. Now it'll sign in

 

Wonky, but it works for now (not ideal).

@Andrew Stoker 

 

Almost 2 years later and this is still happening. Shame on someone.   Has anyone heard of a fix yet?

@Brian Thomas This issue was resolved for us a while back. An update to Teams now allows logging in like normal. What issue are you still experiencing specifically?

@Andrew StokerBig Teams fan by the way. When I open up Teams on my Mac it asks me to authenticate. I type in my email address and it never takes me to ADFS login page to put in my password. It eventually times out and asks me if I want to try it again.  I uninstalled and re-installed, same issue.

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