How to Enable and Disable Login in SQL Server

Enable and Disable Login by Command Line:

Enable Login:

USE [master]

GO

DENY CONNECT SQL TO [SAMBA\A82893]

GO

ALTER LOGIN [SAMBA\A82893] ENABLE

GO

Disable Login:

USE [master]

GO

DENY CONNECT SQL TO [SAMBA\A82893]

GO

ALTER LOGIN [SAMBA\A82893] DISABLE

GO