Ssl ie

I run a site that now uses PIWIK for it’s statistical needs.

When the site is navigated by users, they all receive an error in IE stating that the SSL certificate has errors and that it blocked content. This only happens in IE.

Why would this happen?

PIWIK is run under a sub-domain.

http://webstats.capitalarealibrarydistrict.org

site:

https://capitalarealibrarydistrict.org/ill

Can anyone offer some advice on this?

Thanks!

get a proper certificate and/or tell visitors to update the CA list (Windows Update)