[英]A network-related or instance-specific error occurred while establishing a connection to SQL Server while migration with asp.net core migration
可能是因为您与SQL的连接未启动。 只需执行以下步骤：1.转到运行命令或按Windows + R键并输入services.msc。 2.在此处找到SQL Server（MSSQLSERVER），然后右键单击它，然后单击“开始”选项。 然后重试。
在我的情况下 appsettings.Development.json包含另一个服务器名称，这就是我从未注意到的原因。
ASP.Net在登录时引发错误-建立与SQL Server的连接时发生与网络相关或特定于实例的错误
[英]ASP.Net throw a error on login - A network-related or instance-specific error occurred while establishing a connection to SQL Server
如何超时“建立与SQL Server的连接时发生与网络有关或特定于实例的错误”错误
[英]How to timeout “A network-related or instance-specific error occurred while establishing a connection to SQL Server” error
"出现错误：建立与 SQL Server 的连接时发生与网络相关或特定于实例的错误"
[英]Getting error: A network-related or instance-specific error occurred while establishing a connection to SQL Server
得到错误“与SQL Server建立连接时发生与网络相关或特定于实例的错误…”
[英]Getting error “A network-related or instance-specific error occurred while establishing a connection to SQL Server…”
建立与SQL Server的连接时发生与网络相关或特定于实例的错误
[英]A network-related or instance-specific error occurred while establishing a connection to SQL Server
在EF 6.2.0中建立与SQL Server的连接时发生与网络相关或特定于实例的错误
[英]A network-related or instance-specific error occurred while establishing a connection to SQL Server in EF 6.2.0
“建立与SQL Server的连接时发生了与网络相关或特定于实例的错误。”
[英]“A network-related or instance-specific error occurred while establishing a connection to SQL Server.”
本地数据库：“与SQL Server建立连接时发生与网络相关或特定于实例的错误。”
[英]Local DB: “A network-related or instance-specific error occurred while establishing a connection to SQL Server.”
MySQL“与 SQL Server 建立连接时发生与网络相关或特定于实例的错误”
[英]MySQL “network-related or instance-specific error occurred while establishing a connection to SQL Server”
建立与SQL Server的连接时发生与网络相关或特定于实例的错误-使用TempData时
[英]A network-related or instance-specific error occurred while establishing a connection to SQL Server - When using TempData
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