The ChangePasswordFailureException class is an exception that is raised when an unsuccessful attempt is made to change the password of the login that establishes a connection with the instance of SQL Server by using SQL Server Authentication.
public sealed class ChangePasswordFailureException : ConnectionException
Any public static (Shared in Microsoft Visual Basic) members of this type are safe for multithreaded operations. Any instance members are not guaranteed to be thread safe.
Handling SMO Exceptions