2 posts, 0 answers
  1. Trân nhân
    Trân nhân avatar
    5 posts
    Member since:
    Apr 2013

    Posted 16 May 2013 Link to this post

    I make a Website and Post to, my site is "".

    have a error.

    Server Error in '/' Application.

    A network-related or instance-specific error occurred while establishing a connection to SQL Server. 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. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server).

    Microsoft help me please.
    my email:

  2. Danail Vasilev
    Danail Vasilev avatar
    1476 posts

    Posted 20 May 2013 Link to this post


    The issue you are having is not related to RadControls but to the inability to make a connection to your SQL server. There are number of possible reasons that could cause this behavior. For example:
    • The SQL Server itself is not running.
    • The server or instance name are misspelled
    • You are connecting from a remote machine, and there is a firewall in the way.


    I can suggest you to examine this blog post and this forum thread on the matter or make a research on the internet about the issue.

    Danail Vasilev
    the Telerik team
    If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.
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