VB.net應用程序Microsoft .NET框架錯誤

Question

希望你們能幫忙！

我有一個在我們的網絡上運行的連接到SQL Server的vb.net應用程序。我的應用程序有一個登錄屏幕，我可以成功登錄，然後應該加載另一個表單，但我收到一條錯誤消息（請參閱下文）。

但是，應用程序正常工作，直到我更改SQL配置管理器中的TCP/IP屬性。我確信我恢復了這些更改，但仍然無效。

如果需要，我可以提供更多信息。

您的幫助將不勝感激！週末愉快！

System.Data.SqlClient.SqlException (0x80131904): 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: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.)

Answer 1

這裏是一個故障排除指南 - https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/troubleshoot-connecting-to-the-sql-server-database-engine