To change security authentication mode for MS SQL Server

1.   In SQL Server Management Studio Object Explorer, right-click the server, and then click Properties.


Figure 4.1 Open properties for SQL Server


2.   On the Security page, under Server authentication, select the SQL Server and Windows Authentication mode, and then click OK.


Figure 4.2 Select SQL Server and Windows Authentication mode

3.   In the SQL Server Management Studio dialog box, click OK.

4.   To enable the sa user, expand the Security node, right click sa then click properties.



Figure 4.3 Open properties for sa user

1.       If you select only the Windows Authentication during installation the sa is disable by default. On the Login Properties page, under the Login section, click Enabled, and then click OK in order to use sa for SQL Authentication.



Figure 4.4 Login Properties

5.   In Object Explorer, right-click your server, and then click Restart. If SQL Server Agent is running, it must also be restarted.

About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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