Cannot connect to local SQL Server using Vista using Windows Authentication. Please help.

I have made a fresh "default" install of Visual Studio 2008 on a fresh install of Vista 32bit.

SQL Server 2005 Express has been installed as part of that process.

I can access it using SQL Server Management Studio Express but from within Visual Studio I cannot.

If I drag an SQL Data Source control onto a page and configure it to connect to the local server (using Windows Authentication) I get....

Cannot Connect.
SQL Server does not allow remote connections.
Provider: Named pipes provider, error 40 could not open a connection to SQL Server.

Please help I am getting desperate!

12/24/2007 11:37:42 AM 5668 articles. 1 followers. Follow

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 It looks like the user running the does not have enough permission to connect to SQL. Give relevent permission to the user account from which is running and that should solve the purpose


Please mark the answer if it helped you
12/24/2007 12:28:08 PM

What is your connection string? Did you checked whether you have give the connection string like

SqlConnection conn = new SqlConnection("Server=<yourserver>; Initial Catalog=<your DB name>; Integrated Security=SSPI or TRUE")


while installing SQL Server, did you choose Mixed-Mode or give any username and password for "sa"?

Try the above, or else let me know. 

Achutha Krishnan

~ No one can do everything, but everyone can do something ~
12/25/2007 4:02:56 PM

I'm terribly sorry everybody, I was using the wrong connection string.

Thank you for your time.

1/1/2008 5:36:54 PM

It might be possible that you have not permit the TCP/IP protocol in the configuration area.

Although,here is a problem of connectinstring but its also possible because of these protocols are disable.

Shah Dharnendra G
Sr.Analyst Programmer,
1/2/2008 3:54:08 PM

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