Hi @mms1630
Thank you for posting your query on Q&A!
May I know have you add the Microsoft Entra service URL https://autologon.microsoftazuread-sso.com
to the Trusted sites zone instead of the Local intranet zone blocks users from signing in.
If not, you can roll out the feature https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/how-to-connect-sso-quick-start#roll-out-the-feature
Also, ensure that the device's time is synchronized with the time in both Active Directory and the domain controllers, and that they are within five minutes of each other.
on the other side you can also enable the Seamless SSO via PowerShell for more details please refer the bellow article
For more Troubleshoot on Microsoft Entra seamless single sign-on please read the article
https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/tshoot-connect-sso
Hope this helps. Do let us know if you any further queries.
Thanks,
Akhilesh.
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