Sql Server Express failed to generate user instance
问题 I am using Visual Studio 2010/c# and created an application where I am trying to access as a data source,a database which I created in SQLSERVER Express (via management studio). I have several instances from previous installs which I remove - SQL COnfiguration manager just shows 1 instance SQLEXPRESS which got installed as a named instance "mymachine/sqlexpress". Named pipes, TCP/IP and remote clients are all enabled. I am running under windows 7 64 bit and both the dev environment and sql