Cisco VPN and Snow Leopard

September 13, 2009

 
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After upgrading to Snow Leopard 10.6 I’ve run into yet another quirk. I tried to log on to our VPN and the Cisco VPN client gave me me the following dialog box: “Error 51: Unable to communicate with the VPN subsystem. Please make sure that you have at least one network interface that is currently active and has an IP address and start this application again.”  Umm.
I popped over to the Cisco site and tried to see if maybe there was a 10.6 update for the client, but it turns out you have to have an account with them. After doing some more searching somebody suggested reinstalling the VPN client, so I tried it, and it works!
Cliffs: Reinstall the Cisco VPN client OR you can use Snow Leopard’s built int VPN client (more on this later)

After upgrading to Snow Leopard 10.6 I’ve run into yet another quirk. I tried to log on to our VPN and the Cisco VPN client gave me me the following dialog box: “Error 51: Unable to communicate with the VPN subsystem. Please make sure that you have at least one network interface that is currently active and has an IP address and start this application again.”  Umm.

vpn-fail

I popped over to the Cisco site and tried to see if maybe there was a 10.6 update for the client, but it turns out you have to have an account with them. After doing some more searching somebody suggested reinstalling the VPN client, so I tried it, and it works!

Cliffs: Reinstall the Cisco VPN client OR you can use Snow Leopard’s built int VPN client (more on this later)

  • Definitely reinstalling vpn client is the solution i have faced this problem .
  • rwheadon
    Same here, Cisco VPN stopped working on the Snow Leopard upgrade... re-installed and all is good now. Thanks for the post.
  • The native vpn support in Snow Leopard is rather sub par, but does work. I find it easier to deal with hiccups in it, than dealing with the hassle of downloading the Cisco vpn client.
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