If the application is still installed do this:

  1. From the Finder go to the Applications folder.
  2. Look for the Cisco folder and open it
  3. Then double click on Uninstall Anyconnect to start the uninstall process
  4. Follow instructions to uninstall VPN program

Here's the procedure for manually uninstalling the AnyConnect client from a Mac OS X system.

As root, run the following shell script from the Terminal:

sudo /opt/cisco/anyconnect/bin/vpn_uninstall.sh

You will be prompted for your password. Once you enter it, just follow the steps

If you still having trouble and/or the new Cisco Anyconnect installation complains that you have a version installed, follow these steps:

Enter these commands to clean out the old Cisco VPN kernel extension and reboot the system.

    sudo -s
    rm -rf /System/Library/StartupItems/CiscoVPN
    rm -rf /Library/StartupItems/CiscoVPN
    rm -rf /System/Library/Extensions/CiscoVPN.kext
    rm -rf /Library/Extensions/CiscoVPN.kext
    rm -rf /Library/Receipts/vpnclient-kext.pkg
    rm -rf /Library/Receipts/vpnclient-startup.pkg
    reboot

If you installed the Cisco VPN for Mac version 4.1.08005 package, enter these commands to delete the misplaced files. The deletion of these files will not affect your system, since applications do not use these misplaced files in their current location.

    sudo -s
    rm -rf /Cisco\ VPN\ Client.mpkg
    rm -rf /com.nexUmoja.Shimo.plist
    rm -rf /Profiles
    rm -rf /Shimo.app
    exit

Enter these commands if you no longer need the old Cisco VPN Client or Shimo.

    sudo -s
    rm -rf /Library/Application\ Support/Shimo
    rm -rf /Library/Frameworks/cisco-vpnclient.framework
    rm -rf /Library/Extensions/tun.kext
    rm -rf /Library/Extensions/tap.kext
    rm -rf /private/opt/cisco-vpnclient
    rm -rf /Applications/VPNClient.app
    rm -rf /Applications/Shimo.app
    rm -rf /private/etc/opt/cisco-vpnclient
    rm -rf /Library/Receipts/vpnclient-api.pkg
    rm -rf /Library/Receipts/vpnclient-bin.pkg
    rm -rf /Library/Receipts/vpnclient-gui.pkg
    rm -rf /Library/Receipts/vpnclient-profiles.pkg
    rm -rf ~/Library/Preferences/com.nexUmoja.Shimo.plist
    rm -rf ~/Library/Application\ Support/Shimo
    rm -rf ~/Library/Preferences/com.cisco.VPNClient.plist
    rm -rf ~/Library/Application\ Support/SyncServices/Local/TFSM/com.
       nexumoja.Shimo.Profiles
    rm -rf ~/Library/Logs/Shimo*
    rm -rf ~/Library/Application\ Support/Shimo
    rm -rf ~/Library/Application\ Support/Growl/Tickets/Shimo.growlTicket
    exit

Finally this.

sudo pkgutil --forget com.cisco.pkg.anyconnect.vpn