Cisco client VPN connects but no ping or VPN access after hibernate/sleep

I'm using Cisco Client VPN. When my laptop (Windows 7 Enterprise) sleeps or hibernates I can still connect (or least the client tells me the VPN connection was successful). However, I cannot ping or connect to VPN'd resources. I have tried killing virus protection (McAfee), but that didn't help.

Does anybody have any insight and a solution to this problem?

Solution 1:

Unfortunately, there's no real true "fix" for this problem. It's documented as an issue as Cisco defect ID CSCsf96588. A check of Cisco's release notes (page 5) for VPN client 5.0.06 and .07 both mention it as an issue.

They've issued a software fix to change the way the client re-establishes a secure tunnel, but it's still a problem for platforms.

Cisco's workaround is a recommendation to shut down the VPN client before going into sleep/hibernation mode.

Solution 2:

A way to resolve this issue is to turn off VPN connection via Task Manager before the system goes to hibernate. Find below the scripts that I use to turn off and disconnect VPN before hibernation and then to turn it on after the computer comes back up from sleep.

Before Hibernate:

    REM Before Hibernate
    REM Begin the Task: On an event
    REM Setting Basic
    REM Log:  System
    REM Source: Kernel-Power
    REM Event ID: 42
    REM The system is entering sleep.


    "c:\Program Files (x86)\Cisco Systems\VPN Client"\vpnclient.exe disconnect
    taskkill /f /fi "imagename eq vpngui.exe"

After Hibernate:

    REM After Hibernate

    REM Begin the Task: On an event
    REM Setting Basic
    REM Log:  System
    REM Source: Power-Troubleshooter
    REM Event ID: 1
    REM The system has resumed from sleep.

    cd "c:\Program Files (x86)\Cisco Systems\VPN Client"
    start vpngui.exe

reference: How to execute a script on sleep, hibernate, resume, and shutdown

UPDATE1: Another way that I was able to resolve it is to disconnect from current WiFi and connect to a another one. It also fixed problem few times.