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Instructions for Internet Explorer

Please note that all images on these pages are links to large size images.

Deleting old certificates

This section will help you to delete any old AUSSEC certificates. Caution: Please delete only certificates for AUSSEC, deleting any other certificates may cause problems with other sites and even possibly require the web browser to be reinstalled. If you are unsure about anything in this paragraph please ask or skip to Importing the new Certificate.

Internet Options

Go to Tools -> Internet Options

Select the Content tab

Select Publishers


Select the Trusted Root Certification Authorities tab

Highlight any AUSSEC or AUSSEC CA entries and then Remove them

Please note that it is possible that there may be entries under Trusted Publishers depending on which way the certificate was installed previously

Certificate deletion warning

Select Yes at the warning prompt

Second certificate deletion warning

Select Yes at the second warning prompt

Select Close

Importing the new Certificate

AUSSEC CA download page

Using your browser point it to http://www.aussec.com/cacert. This will present a page similar to the one at right.
As of July 21, 2009, when the upgrade is complete, there will only be the new CA certificate shown. Until then, the old one and the new one are visible.

Certificate download

Select the PEM format. A new window will now appear, select Open

Certificate trust

An advisory window is now shown with details of this certificate and the fact that Internet Explorer cannot confirm a trust path

Comparing thumbprints

First select the Details tab and then scroll down to reveal the certificate's thumbprint. Highlight the thumbprint. Now compare the thumbprint on the Details tab with those on the web page.

Select the General tab again. If the fingerprints compared successfully it is safe to select Install Certificate, this will bring up the Certificate Import Wizard. If the fingerprints did not compare successfully select OK which will cancel the installation, as this certificate may not belong to AUSSEC. Please advise AUSSEC immediately if this is the case.

Certificate import wizard

Select Next to continue the Certificate Import Wizard

Where to store the certificate

Select Next to accept the default location

Almost done

Select Finish to allow the wizard to do its work

Security warning

Select Yes at the security warning prompt after you have verified it is the AUSSEC CA that is being installed

Finally done!

Select OK this completes the installation.

Now you are ready to go back to reading your mail… Enjoy!