WHD 12.4.1 is working as expected but I did not set it up. It is running on Windows server. Web access throws the browser 'problem with site's security certificate' error. Agtee to this and it all good. We do have a new valid certificate and would like to link this in. The 12.4.0 admin guide has several sets of Linux instructions that ought to fit the bill if we were not running whd on Windows. Web certificates in practice are not my strong point, the theory is fine. Would someone please provide or link me to an easy guide to changing the site certificate? Thanks.