Cisco AnyConnect error: "The VPN client was unable to setup IP filtering. A VPN connection will not be established"
Issue
The user has a valid certificate and Cisco AnyConnect is able to grab the certificate, but upon submitting the password, AnyConnect throws the error: "The VPN client is unable to establish a connection."
Cause
The cause of this issue pertains to the Base Filtering Engine (BFE). See What is Base Filtering Engine.
Solution
Install and start the BFE service.
Note
Resource
See information about this topic at:http://www.hageltech.com/blog/2012/02/07/base-filtering-engine-problems.html