reprint please indicate from Zhu Zhu Homeland http://blog.csdn.net/zhgl7688
To modify the SA authentication login method in SQL Server:
1. In the Start menu, locate SQL Server Management Studio, double-click Open, enter with Windows authentication.
2. Select "Server Name", right click, select "Properties" to open the Server Properties window.
3. Locate "Security" in the list on the left of the open window and select "SQL Server and Windows Authentication Weapon (S)" In the server authentication on the right side of the window, click "OK" at the bottom right.
4, modify the SA (Database Super Administrator) login password: In the main form on the left "Object Explorer", click on the security front of the + sign, click the + sign before the login name, find "sa".
5. Right-click on "SA" to open its "Properties", select "General" in "Login Properties", change the password, and click "OK" in the lower right corner.
6. Open the properties of the SA again, check "status", and in the right window, select "Grant" and "Enable", and click "OK" in the lower right corner.
7. Finally reboot the server: select "Server Name", right click, select "Restart" is OK.
Modify the SA authentication login method in SQL Server