The application you are accessing is running on onconnect.net. Due to the nature of the application onconnect.net uses encrypted data transmission on the basis of SSL. In order to support a secure channel without receiving annoying messages a small file needs to be installed on your computer. This does not impose any security breaches to your system. Please note that you may continue without installing this file, but connection set up will be considerably slower.
To install this file, click on the button 'Download CA certificate' below and select 'open'. In the next window click the 'install certificate' button. Leave 'automatically select...' checked in the next window. Complete the installation by clicking 'Finish' in the next window.