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 are in the same PC.

When I try and configure the connection I go to the physical path where the file resides, add it but the test connection button fails with the msg failed to generate a user instance of sql server, only an integrated connection can generate an user instance

The solutions I found don't seem to apply.

User Instance is already enabled (set to 1) and I could not find any path to remove "old instances" there is only 1 path leading to the currently installed Instance.

Help would be appreciated

回答1:

Using Visual Studio SQL Server database through IIS7, they use default asp.net database.

Following might help,

• Open IIS manager.

• create a new application pool instead of using default application pool and keep your database in that.

• Go to sql configuration manager > go to properties.

• Select local system instead of built in system.

• In the default browser option, Delete all the other files and paste your .asmx file.

• See in actions. If anything is disabled, enable it.

Hope it helps. :)

来源：https://stackoverflow.com/questions/11747389/sql-server-express-failed-to-generate-user-instance