An existing connection was forcibly closed by the remote host
引发此问题有可能是禁用了TLS1.2导致的.
进入注册表, 找到TLS1.2在Client 目录下 把值改为1即可
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols
ASP.NET MVC An existing connection was forcibly closed by the remote host
原文：https://www.cnblogs.com/hesijian/p/12408471.html