Microsoft SQL Server database ranks third in the relational database, second only to Oracle and MySQL database. when using it, it is inevitable to encounter various problems and warnnings. You may be dba or a developer, I hope this content can help you solve SQL Server error number 15539.
Error number: 15539
Severity level: 16
Event logged: User ‘%s’ cannot be dropped, it can only be disabled. The user is already disabled in the current database.