I'm having a problem connecting to VPN on my Windows 10 (with Ethernet).

VPN fail description:

Can't connect to [my VPN]

The remote connection was not made because the attempted VPN tunnels failed. The VPN server might be unreachable. If this connection is attempting to use an L2TP/IPsec tunnel, the security parameters required for IPsec negotiation might not be configured properly.

I try ping to the server IP and successful: my cmd window

What confuse me is that the connection is good for half a year but fail recently, and the same configuration works fine on my OS X of laptop.

How could I solve it?

  • Has the VPN been working previously on the same Windows installation? Or have you recently updated to Windows 10? – user1751825 Feb 22 '16 at 5:25
  • @user1751825 It works previously for the same Windows. I don't remember if there is any update installation... If some update is installed, could I just reset some certain configuration of the network? – Rahn Feb 22 '16 at 6:37

I have faced same issue with Cisco AnyConnect VPN client with Windows 10 OS. It was typically after updating Windows 8.1 by Windows 10.

But if I install Clean Windows 10 then no issue. If possible please update VPN Client.

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