通过在web.config中添加appcontext设置，无法将应用设置为使用系统默认的TLS版本 [英] Cannot set app to use system default TLS version by adding appcontext settings in web.config

问题描述

根据

According to .net guidance of TLS protocol programming, it suggests to config security via appcontext switch when your project targets on .net 4.6. This way works when add appcontext in app.config for console application. However, it doesn't work when add appconext switch in web.config for website project.

这是我添加的配置.

<runtime>
   <AppContextSwitchOverrides value="Switch.System.Net.DontEnableSchUseStrongCrypto=false;Switch.System.Net.DontEnableSystemDefaultTlsVersions=false"/>
</runtime>

推荐答案

AppContext切换Web配置文件中的用法:

AppContext switches usage in web config file:

<appSettings>
    <add key="AppContext.SetSwitch:Switch.System.Net.DontEnableSchUseStrongCrypto" value="false" />
    <add key="AppContext.SetSwitch:Switch.System.Net.DontEnableSystemDefaultTlsVersions" value="false" />
</appSettings>

https://github.com/dotnet/docs/issues/6675

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