尝试之前的调用 OpenIdRelyingParty.CreateRequest $ C添加此code到您的网站的 $ C>：

ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;

在一些Azure的配置，这已被证明是解决该问题。请让我们知道，如果这个解决您的问题，以及。

In some Azure configurations this has been shown to resolve the issue. Please let us know if this resolves your issue as well.