How to fix: User, group, or role ‘*’ already exists in the current database. (Microsoft SQL Server, Error: 15023)

 If you’ve restored a database onto another server, you may get the following error message when adding user logins to the database: Create failed for User ‘TMS’. (Microsoft.SqlServer.Smo) User, group, or role ‘TMS’ already exists in the current database. (Microsoft SQL Server, Error: 15023)   To fix this there are two different methods depending on […]