Article ID: 245768 - View products that this article applies to.
This article was previously published under Q245768
When you add an existing Windows NT logon account as a Microsoft SQL Server login, you receive the following error message:
Windows NT user or group 'Domain_name\User_name' not found.
Check the name again.
This problem occurs because you install SQL Server by using a case-sensitive Unicode collating sequence.
You can add this new login in SQL Server by typing the user name or group name exactly as it is entered in User Manager for Domains. (This includes using the original case for every letter.) You can copy this name from the User Manager for Domains to SQL Server Enterprise Manager.
This behavior is linked only to Unicode case sensitivity. This behavior does not occur if you only modify the sort order.
Steps to Reproduce the Problem
Article ID: 245768 - Last Review: February 12, 2012 - Revision: 4.0