The actual content of this technical error is found below:

The owner of support.microsoftsecurityessentials.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

support.microsoftsecurityessentials.com uses an invalid security certificate.

The certificate is only valid for the following names:
  a248.e.akamai.net, *.akamaihd.net, *.akamaihd-staging.net, *.akamaized.net, *.akamaized-staging.net  

Error code: SSL_ERROR_BAD_CERT_DOMAIN

Although MS support has ended for Windows XP, for quite some time.. Microsoft Security Essentials had kept my computer safe until this certificate error appeared on 4/13/2016.

I reported and copied the received error report to Microsoft on 4/14/2016.

As best as I can tell.. MS has yet to take corrective action and their support agent has suggested accessing this site.

Anyone know of a fix for this navigational block instituted by Mozilla?

                                             OR

Know of a MS contact that can fix this reported certificate error?

Please advise!