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You may also be able to connect which will load a new client and next time you connect the certificates will not be displayed.
I was disconnected with the message "Administrator Reset", what does this mean and how do I reconnect?
It is occasionally necessary to reboot the VPN servers in order to install patched software, or to enable new features. This message indicates that the network administrator has disconnected your session so that the VPN server can be rebooted. Click "OK" when you receive this message, and you should be able to connect again after approximately 1 minute. If you want to reconnect immediately, select an alternate server name from the AnyConnect connection window before reconnecting (e.g. change fwvpn1.slac.stanford.edu to fwvpn2.slac.stanford.edu).