Jul 19, · How to Fix Reason Failed to Enable Virtual Adapter on Windows When attempting to connect to a VPN gateway (router or firewall) using the Cisco VPN Client on Windows 10, it will fail to connect because of the following reason: Reason Failed to Enable Virtual Adapter/5(58). Having been discontinued back in , it shouldn’t come as a shock that the Cisco VPN client isn’t supported by Windows In fact, you would be lucky to get it working with Windows Author: Gabe Carey. Free cisco vpn client windows 10 download. Internet & Network tools downloads - Cisco VPN Client by Cisco Systems, Inc. and many more programs are available for instant and free download. Cisco's popular VPN Client for 64Bit Windows operating systems. VPN Client version: k9 Useful Cisco VPN related articles W. Apr 17, · Hi, I have just done a clean install of win PRO, then upgrade to windows 10 pro. I have a client where I must use: Cisco Systems VPN client version When I try to install “vpnclient_slicelive.com” (the install file for version ) I get: Cisco does not run on this · Hi James, About this issue, as the link said, please go to.