Our customer provides a Checkpoint-based VPN. My workstation runs Windows 8.1 Pro with the built-in VPN plugin for Checkpoint.
I have IP address of VPN and its credentials. I have followed the tutorial to configure the VPN in Windows but I got an error after authentication
The server returned an invalid response
Credentials are not domain credentials (plain username and password) and I am doubly sure they are correct, because if I willingly type them wrong I am requested them again.
Currently, I can't ask the customer IT to provide me assistance, as they may rethrow the ball to me saying they only support Windows 7 + official client.
Can I do something to diagnose or troubleshoot this kind of problem? Is there any patch that can be applied to the client in case of a common problem? My coworkers with Windows 7 have no problem connecting to that VPN.
[Add] Windows Event Log shows two related errors.
First, CheckPointVpnPluginApp.exe crashes on exception (code
00007FFE9D7D0989), then RasClient returns error 2250