provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server-优快云博客

本文介绍了一种常见的SQL Server连接失败的问题，错误信息提示无法通过命名管道建立连接。提供了详细的解决步骤，并附带了一个视频教程及下载资源，帮助读者解决类似问题。

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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)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: 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)

解决方法：

视频文档：.wmv；大小：8,840KB；长度：00:05:19

下载地址： http://download.cnblogs.com/insus/SQL/Could%20not%20open%20a%20connection%20to%20SQL%20Server.zip