遇到一樣是WIN10卻不能連上VPN, 出現了下面的錯誤
The network connection between your computer and the VPN server could not be established because the remote server is not responding. This could be because one of the network devices (e.g. firewalls, NAT, routers, etc) between your computer and the remote server is not configured to allow VPN connections. Please contact your Administrator or your service provider to determine which device may be causing the problem.參考自 http://woshub.com/l2tp-ipsec-vpn-server-behind/
首先停用下面2個服務試看看, 用管理員開CMD
net stop IKEEXT
net stop PolicyAgent
再連線看看, 大部份都是卡在這裡
如果還是不行, 輸入NCPA.CPL, 找到設定好的VPN按右鍵選內容, 在安全性部份把CHAP打勾
最後再不行就
reg add "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Rasman\Parameters" /v AllowL2TPWeakCrypto /t REG_DWORD /d 1 /f
reg add "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Rasman\Parameters" /v ProhibitIpSec /t REG_DWORD /d 0 /f