Connection String for Sql Server 2. Express Edition. I want to use SQL Server 2. Database in my application, i. Right now I want two connection string one for windows application and the other for my website. My database is hosted in lets say www. I want to host my website on a web server which is done in ASP. NET. So what will be the connection string for that. I used this as the connection string for my website Data source. SQLEXPRESS Attach. DBFilenameData. DirectoryTest. Integrated SecuritySSPI and it worked fine in my local computer but when I hosted it in the web server the following error arises A network related or instance specific error occurred while establishing a connection to SQL Server. Learn Draw Game Characters here. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. Awlg61HGsDg/UI5RTR1-ErI/AAAAAAAAAO8/VhC1O-LrHj8/s1600/9.png' alt='Connection String Sql Server Express Edition' title='Connection String Sql Server Express Edition' />SQL Network Interfaces, error 2. Error Locating ServerInstance Specified2. My SQL Database is in the web server. I want to connect it through windows forms application from my local computer using vb. So what will be the connection string for this. I could not understand what to do. Please someone tell me what will be the correct connection string. Connection String Sql Server Express Edition' title='Connection String Sql Server Express Edition' />Connection strings of sql server 2014 express edition. ASP. NET Forums on Bytes. D.png' alt='Connection String Sql Server Express Edition' title='Connection String Sql Server Express Edition' />Connectionstring to SQL Express edition. SQL Server Express. If you go to the properties page of your data adapter you will find the connection strings.