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Login Error 18456

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Hi everyone,

The following is the description of what I did:

- Fresh install Windows 2012r2 joined to my domain controller

- Installation of MS SQL Server 2012, with the definition of both the windows and SQL authentication

- During the installation I define the group " domain admins " as the authorize group to manage SQL Server

- The problem I face, is when using a member of the domain admins to connect to the MS SQL, the connection fails with the error 

   18456.

- The connection using the SQL authentication "sa" works fine.

- After connecting using the "sa", I verified the properties of the security login " domain admins ", I see windows authentication is

   enabled

Is there something I'm missing?

Thank you for your help.


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