There has been a problem reported with Windows XP SP3 with certificates not being recognized. One reported solution was to download Security Update for Windows XP Service Pack 3 (KB952069) and install it.
There are two ways to install the LAFN certificates: through direct download and through the Internet Options Control Panel. When you get the download dialog box, if you select the Open button, then the system will try to directly open the Certificate Manager.
If the download did start the Certificate Manager you will see:
Click on the Install Certificate Button. That takes you to step 3 below. If the download did not start then Certificate Manager directly then go to Control Panels and double click on Internet Options.
If you receive the following error message:
Then your system cannot handle that certificate type. Return and download the other certificate type.
Click on the Close button and close out of all windows.
You can now delete the certificate files you downloaded as they are no longer needed. The system should no longer ask you about using LAFN certificates.
This page last updated: Dec 6, 2013