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Cisco AnyConnect error: "The VPN client was unable to setup IP filtering. A VPN connection will not be established"


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."


This issue involves the Base Filtering Engine (BFE).

See What is Base Filtering Engine.


Install and start the BFE service.