Why we cannot add one domain account login into the Logins of an SQL server?


We're trying to add one new user into an SQL Server by doing the following steps:

-- Access the SQL server --> Start the SQL Enterprise Manager --> Microsoft SQL Servers
-- SQL Server Groups --> (local) (Windows NT) --> Security --> Right click on “Logins” --> Select “New Login”
-- Under Authentication --> Check “Windows Authentication”, Select the domain, enter the domain login userID for name
-- Click OK --> ERROR: “Windows NT user or group “<domain>\<user domain login id>” not found” appears

The problem is that the adding only failed for one person (domain login account); we can easily add other people into the "Logins" group of the SQL Serve. It is strange that if we click on "Browse" to manually browse the domain account loginid of this person, we can find the login ID in the list of the domain login account that the system can see.

If you have some idea about what can casue this problem, please help.

Thanks a lot,

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Guy Hengel [angelIII / a3]Billing EngineerCommented:
This process only works if you are logged on to the local NT machine with domain account. if you are logged on locally to the computer, you will see that error (also)

Now, as you seem to be able to browse to the login, you are connected to the domain, hence the above is not the problem.
is there anything special about the name (special characters, length...) or it's permissions?

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Aneesh RetnakaranDatabase AdministratorCommented:
Also check whether that login is associated with a trusted connection.
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