Cisco AnyConnect Secure Mobility VPN: Error messages


AnyConnect was not able to establish a connection to the specified secure gateway. Please try connecting again.
Connection attempt has failed.
  • This points to firewall or other security software not allowing this connection. Try disabling the security software ...
The VPN connection failed due to unsuccessful domain name resolution.
  • This suggests you haven't filled in correctly.
The VPN client agent was unable to create the interprocess communication depot.

The "Internet Connection Sharing" option provides networked computers with the possibility to share a single Internet connection.
This does NOT work with VPN.

  • Solution: "Internet Connection Sharing" should be disabled.
  • Then try to reinstall the VPN client.


AnyConnect.pkg can not be installed, because the digital signature is invalid.

This error is shown when MacOS is too old to install the AnyConnect client.