(提供程序:命名管道提供程序，错误:40无法打开与SQL Server的连接) [英] (Provider: Named Pipes Provider, error: 40 could not open a connection to sql server)

问题描述

SqlException was unhandled by user code.

a network related or instance-specific error occurred while establishing a connection to server. The server was not found or was 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)

推荐答案

对SQL进行故障排除连接问题 [ ^ ]

在Sql Server配置管理器中，将网络配置"->"TCP/IP"设置为已启用"

In Sql Server Configuration Manager set Network Configuration->TCP/IP to Enabled

您的服务器可能已关闭.否则连接字符串可能不正确.虽然有很多情况.

Your server could be down. or the connection string may be incorrect. There are many scenarios though.

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