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Kaspersky Causes Cisco AnyConnect VPN Client Unable To Establish Connection

The Cisco AnyConnect VPN Client v2.4 keeps on saying it’s unable to establish a connection and record some errors such as “NETINTERFACE_ERROR_INTERFACE_NOT_AVAILABLE” in the Windows Event Log.

Cisco AnyConnect VPN Client unable to establish a VPN connection.On Windows Device Manager, there is a new network adapter called “Cisco AnyConnect VPN Virtual Miniport Adapter for Windows x64″ appears in disabled mode (this might be the answer of error in Event Log). Though I’ve manually enabled the virtual network card, it’s still disabled by Cisco VPN client during its attempt to establish connection :(

I suspect this has something to do with Kaspersky Internet Security software, but hey all Cisco-related programs are set to be automatically grouped as “trusted” apps granted with all rights.

I can’t figure out what else to be configured, until I found this trick from Google.

How to fix Cisco VPN client connection error caused by Kaspersky IS 2011?

1. Classify all Cisco program as trusted apps granted with full right (as those granted to Windows system programs).

2. Set Kaspersky IS to “monitor selected ports only” and don’t monitor HTTPS (port 443):

Configure Kaspersky to disable port 443 scanning to fix Cisco AnyConnect VPN Client connection problem.

Note, there is an alternate trick proposed by others, which configure Kaspersky to not scanning opened files and network traffic of Cisco VPN program. Personally, I don’t prefer this alternative, but it’s up to you which one to use.

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  1. Camilo 01-08-13@23:56

    Thank you for your information, i can connect with AnyConnect througth Kaspersky Internet Security 2013…..

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