Question

Photo of Ted Clendenin

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AD Authentication

4

I have set up AD authentication. When I switch a user to AD Authentication and try to log in I get this:



Any suggestions? Database authentication works fine. Two server local hosting, server 2012 R2. Sql Server 2016

  • Photo of Ted Clendenin

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    It was the IP address instead of DNS name. Thanks!

  • Photo of Jim Michael

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    That image is broken. Can you post another one? Or just copy/paste the text of the error?

  • Photo of Ted Clendenin

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    System.DirectoryServices.AccountManagement.PrincipalServerDownException System.DirectoryServices.AccountManagement The server could not be contacted.
    System.DirectoryServices.Protocols.LdapException System.DirectoryServices.Protocols The LDAP server is unavailable.

    Are there specific firewall ports that I need to open for this? If so would it be encrypted LDAP? I tried opening regular LDAP ports and no bueno.


    • Jim Michael

      Jim Michael

      Ok, I assume you're pointing at a valid domain controller? Have you tried using the IP of the DC instead of a dns name? Maybe post a screen shot of your Active Directory Properties screen.

    • Photo of Ted Clendenin

      0

      Thanks! I'll give both a shot!