The underlying connection was closed: An unexpected error occurred on a send

https请求,win7正常,xp返回  The underlying connection was closed: An unexpected error occurred on a send

 

百度了下,貌似是 认证协议的问题

 

加入,果然奏效。。

ServicePointManager.SecurityProtocol = SecurityProtocolType.SSL3;

 

转载于:https://www.cnblogs.com/cyberarmy/p/10038499.html

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