Do a clean uninstallation first and re-install the new version of Cisco VPN client.
How to uninstall Cisco VPN clientIn most cases, you uninstall the Cisco VPN Client by using the ... You can also use the Windows add/remove utility to uninstall Cisco VPN Client. ...
http://www.howtonetworking.com/cisco/ciscovpnclient1.htm
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
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How to Setup Windows, Network, VPN & Remote Access on
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I did an in place upgrade from Windows XP Pro SP2 to Vista. Now my PPTP VPN
connection file to a corporate Cisco 3005 VPN Concentrator does not work as
before.
Any suggestions would be appreciated.