当我尝试连接到 Windows 10 Pro 上的客户端 VPN 时，遇到了一个有趣的问题。
我可以通过手机（4G）连接客户端的 VPN，但不能连接办公室网络，然而其他同事可以连接到同一网络。
我尝试过重置网络适配器、网络设置、DNS，但都没有成功。我还下载了Wireshark，看看是否有东西弹出来，但我对这种网络的了解非常有限。
VPN 设置如下：
点对点隧道协议
微软CHAP2
我将添加事件查看器中记录的信息。
CoId={FC917C8A-C531-4137-A439-69F13747C3FF}: The user SYSTEM is trying to establish a link to the Remote Access Server for the connection named VPN1 using the following device:
Server address/Phone Number = hidden
Device = WAN Miniport (IKEv2)
Port = VPN2-1
MediaType = VPN.
CoId={FC917C8A-C531-4137-A439-69F13747C3FF}: The user SYSTEM dialed a connection named VPN1 which has failed. The error code returned on failure is 800.
CoId={FC917C8A-C531-4137-A439-69F13747C3FF}: The user SYSTEM has successfully established a link to the Remote Access Server using the following device:
Server address/Phone Number = hidden
Device = WAN Miniport (IKEv2)
Port = VPN2-1
MediaType = VPN.
CoId={FC917C8A-C531-4137-A439-69F13747C3FF}: The link to the Remote Access Server has been established by user SYSTEM.
CoId={FC917C8A-C531-4137-A439-69F13747C3FF}: The user SYSTEM is trying to establish a link to the Remote Access Server for the connection named VPN1 using the following device:
Server address/Phone Number = hidden
Device = WAN Miniport (SSTP)
Port = VPN1-1
MediaType = VPN.
CoId={FC917C8A-C531-4137-A439-69F13747C3FF}: The user SYSTEM is trying to establish a link to the Remote Access Server for the connection named VPN1 using the following device:
Server address/Phone Number = hidden
Device = WAN Miniport (L2TP)
Port = VPN3-1
MediaType = VPN.
CoId={FC917C8A-C531-4137-A439-69F13747C3FF}: The user SYSTEM dialed a connection named VPN1 which has failed. The error code returned on failure is 800.
答案1
在网上搜索了几天后，我偶然发现了这篇文章https://support.microsoft.com/en-au/help/312840/error-message-error-720-no-ppp-control-protocols-configured这促使我删除并重新安装 TCP 协议/协议。
- 我进入设备管理器并按照下图删除了驱动程序。
- 重启机器
- Windows 自动重新安装了驱动程序
- 测试了 VPN。
- 一切正常。
