Hi when we logon to our domain joined machines with our username and password, when we launch Teams we are asked for our username and password again.Is there a way to enable SSO?We are using Azure ADThanks

danieldunn100 OK, so if SSSO works with those other Office Applications with MFA enabled, I would also expect it to work the same way with the Teams application. However, this is not the experience you are seeing, which brings us full circle to your original problem. I have no other immediate suggestions for you i'm afraid, but I will think some more about this and if I find out anything further, I will let you know.

danieldunn100 Are you synchronising your on-premises AD to Azure AD with Azure AD Connect? If so, you can configure Seamless Single Sign on via Passthrough Authentication (PTA), or Password Hash Synchronisation (PHS). Check out - https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-sso Users will most likely still need to sign in to Teams and other O365 Apps the first time they are setup and accessed (this quite often throws people), but after that, it should work nicely.

PeterRising Thanks for this! That was the guide I used, I have everything set as it describes but it still doesnt automatically sign in and the tests dont seem to work. I can figure out what I have missed

danieldunn10000 Have you deployed the URLs for SSSO to the Internet Explorer settings?

PeterRising Yes everything is as it says in the guide. In the Teams logs I've noticed the error code 4c7. I think it explains it here - https://appuals.com/microsoft-teams-connection-issues/ We do have an AD FS server (on Server 2012 R2) for a couple of other things. I've followed the steps but it hasnt worked yet! Thanks for your help 🙂

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23 Replies

PeterRising
MVP
May 06, 2020
danieldunn100

Are you synchronising your on-premises AD to Azure AD with Azure AD Connect? If so, you can configure Seamless Single Sign on via Passthrough Authentication (PTA), or Password Hash Synchronisation (PHS). Check out - https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-sso

Users will most likely still need to sign in to Teams and other O365 Apps the first time they are setup and accessed (this quite often throws people), but after that, it should work nicely.
- danieldunn10000
  Copper Contributor
  May 06, 2020
  PeterRising
  
  Thanks for this!
  
  That was the guide I used, I have everything set as it describes but it still doesnt automatically sign in and the tests dont seem to work.
  
  I can figure out what I have missed
  - PeterRising
    MVP
    May 06, 2020
    danieldunn10000
    
    Have you deployed the URLs for SSSO to the Internet Explorer settings?

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