I created a C# project in Visual Studio 2010 Express. I installed Microsoft SQL Server 2005 Express edition. I tried to create a new data source from Visual Studio and encountered the "Instance Failure" error in Microsoft Visual C# 2010 Express
pop up window.
I have installed default instance of MS SQL Server. Configured it for accepting remote connection, enabled TCP and UDP connections, and ensured that server and browser are running on local environment. Please anyone can help to resolve this problem.