I\'m running SQL Server 2012 Management Studio Express in windows 7, i am having issues connecting to the local db. i tried all the above mentioned solutions, didnt work. pl
After two days troubleshooting, finally, I got the result If you are using express version of SQL server management studio then for local database connection, use this instead of Local****.
Use ServerName = (LocalDb)\MSSQLLocalDB
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For more information go to the reference link - https://social.msdn.microsoft.com/Forums/sqlserver/en-US/b75bef7e-13f3-4658-8d43-9df12ab4c320/connecting-localdb-using-sql-server-management-studio-express?forum=sqlexpress