嗨Prathima，

Hi Prathima,

感谢您在此发帖。

>> 升级TLS 1.2

>>Upgrade of TLS 1.2

您的Windows版本是什么？

What's your Windows version?

Microsoft已为.Net 3.5添加了一项功能，允许应用程序可选择使用系统默认的SSL和TLS版本，包括TLS 1.2。要使用此功能，您应首先安装特定于每个Windows版本的修补程序，如下面的知识库文章中的
所述，然后按照每篇知识库文章中的描述修改注册表。

The Microsoft has added a feature for .Net 3.5 allowing applications to optionally use system-default SSL and TLS versions, including TLS 1.2. To use this feature, you should first install a patch that is specific to each version of Windows, as described in the KB articles below, and then modify the registry as described in each KB article.

KB3154​​518  功能; 可靠性汇总HR-1605 - NDP 2.0 SP2 - Win7 SP1 / Win 2008 R2 SP1

KB3154518    Reliability Rollup HR-1605 - NDP 2.0 SP2 - Win7 SP1/Win 2008 R2 SP1

KB3154​​519 功能;  可靠性汇总HR-1605 - NDP 2.0 SP2 - Win8 RTM / Win 2012 RTM

KB3154519    Reliability Rollup HR-1605 - NDP 2.0 SP2 - Win8 RTM/Win 2012 RTM

KB3154​​520 功能;  可靠性汇总HR-1605 - NDP 2.0 SP2 - Win8.1RTM / Win 2012 R2 RTM

KB3154520    Reliability Rollup HR-1605 - NDP 2.0 SP2 - Win8.1RTM/Win 2012 R2 RTM

KB3156421 功能;   1605 HotFix汇总通过适用于Windows 10的Windows Update。

KB3156421    1605 HotFix Rollup through Windows Update for Windows 10.

希望这可以为您提供帮助。

Hope this could be help of you.

***的问候，

Baron Bi