Drop SQL login even while logged in

Question

When dropping a SQL Server 2008 login as part of integration test execution I sometimes get the following error:

System.Data.SqlClient.SqlException: Cou

Answer 1

In SqlServer Studio on the Master DB.

Use the command sp_who2 to list the opened sessions.

In the list find the spid for your user - there may be more than one - e.g. 999

Use kill and the spid to close all the sessions e.g.: kill 999

Then DROP LOGIN [theuser]