From there you should be able to make sure the database engine service gets installed.įirst try the most popular solution provided by Ravindra Bagale.
Launch the install file and chose the option "New installation or add features to an existing installation". It sounds like you didn't get everything installed. Otherwise, run Start -> Run -> Services.msc If so, is it running? If you're connecting using a username and password, you need to configure SQL Server to accept "SQL Server Authentication Mode": - YOU MUST RESTART YOUR SQL SERVER AFTER RUNNING THIS!ĮXEC If you're connecting using "Integrated Security=true" (Windows Mode), and this error only comes up when debugging in web applications, then you need to add the ApplicationPoolIdentity as a SQL Server login: Verify your SQL Server connection authentication mode matches your connection string: Check SQL Server Configuration Manager for the path to the snap-in according to your version. If you don't find the SQL Server Configuration Manager in the Start Menu you can launch the MMC snap-in manually. You can turn these on by opening the SQL Server Configuration Manager in Start > Programs > Microsoft SQL Server 2012 > Configuration Tools (or SQL Server Configuration Manager), and make sure that TCP/IP and Named Pipes are enabled. You need to make sure that SQL Server is allowed to use TCP/IP or named pipes. While you're in the services applet, also make sure that the service SQL Browser is started. You can do this by going to Start > Control Panel > Administrative Tools > Services, and checking that the service SQL Server ( SQLEXPRESS) is running. You need to verify that the SQL Server service is running.