Transfer logins and passwords between instances of SQL Server This article describes how to transfer the logins and the passwords between different instances of SQL Server running on Windows. Original product version: SQL Server Original KB number: 918992 Introduction This article describes how to transfer the logins and passwords between different instances of Microsoft SQL Server. Note The instances may be on the same server or on different servers, and their versions may differ. More information In this article, server A and server B are different servers. After you move a database from the instance of SQL Server on server A to the instance of SQL Server on server B, users may be unable to log in to the database on server B. Additionally, users may receive the following error message: Login failed for user ' MyUser '. (Microsoft SQL Server, Error: 18456) This problem occurs because you did not transfer the logins and the passwords from the insta...