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:
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.