Can't connect to GlobalProtect

[Touqeer]

We recently implemented the solution GlobalProtect solution. Connect method is pre-logon. One of the users is unable to connect. Here are the logs.

(T2984) 08/05/15 12:09:24:550 Debug(3468): prelogin to portal result is

(null)

(T2984) 08/05/15 12:09:24:550 Debug(3573): Failed to pre-login to the portal xxxxxxxxx. Error 0

(T2984) 08/05/15 12:09:24:550 Debug(1593): close WinHttp close handle.

(T2984) 08/05/15 12:09:24:550 Info (4997): Portal config does not exist, return default value: (null)

(T2984) 08/05/15 12:09:24:550 Info (4107): failed to retrieve value of the tag version.

(T2984) 08/05/15 12:09:24:550 Info (4144): Skip reading cached portal config.

(T2984) 08/05/15 12:09:24:550 Debug(4151): portal status is Invalid portal.

(T2984) 08/05/15 12:09:24:550 Debug(4152): returns 0.

(T2984) 08/05/15 12:09:24:550 Debug(3410): Set state to Disconnected

(T2984) 08/05/15 12:09:24:550 Debug(1135): unknown network type.

(T2984) 08/05/15 12:09:24:550 Debug( 805): Send response to client for request portal

(T2984) 08/05/15 12:09:24:550 Debug(5959): Set m_bPreviousSwitchOffMsg to 0

The client version is 2.2.2-3

[bspilde]

What OS?  Are you able to login to the portal via a web browser? Touqeer  If you have access to any, do any other OS types work or any other versions of client?

Would anything like a proxy or splash screen be getting in the way of the initial connection? (error looks like it indicates something at the portal itself but just getting some background)

[Touqeer]

Thanks for looking at my query.

OS: Windows 7 Enterprise 64-bit.

Several other clients are able to connect running same OS and client version so I'm not sure what's up with this particular client.