I am Hack Sparrow
Captain of the Internets.

Solution for VPN Connection: Verify your settings and try reconnecting.

I have been encountering a very irritating problem on my Mac for quite some time. Everytime VPN times out or you enter a wrong password, VPN stops working with this message:

VPN Connection
An unrecoverable / configuration error occurred. Verify your settings and try reconnecting.

Here is how to fix the problem without restarting your system.

$ ps aux | grep racoon
captain 8399 0.0 0.0 2435116 524 s002 S+ 5:13PM 0:00.00 grep racoon
root 8381 0.0 0.0 2435608 1992 ?? Ss 5:10PM 0:00.05 /usr/sbin/racoon -x

Note the process id of /usr/sbin/racoon, kill and restart it. In case /usr/sbin/racoon is not running already, just start it as shown in the second line below.

$ sudo kill 8381
$ sudo /usr/sbin/racoon

Try connecting to VPN now, you will be prompted for the password. Sometimes you have to kill the racoon to get your work done.

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