Hi

Mozilla does not provide user support by telephone, but members of the Mozilla Support contributor community (like me!) are more than happy to help you on this support forum.

How can we help you with Firefox?

Secure Connection Failed

An error occurred during a connection to idm.xfinity.com. Peer’s Certificate has been revoked.

Error code: SEC_ERROR_REVOKED_CERTIFICATE

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Instead of my email loading at opening up firefox the above message is what I get, even if I type the web address into the bar it may allow me to put my user name and password and then it goes right to the above message. Xfinity couldn't help and neither could apple support, they told me to speak with mozilla firefox, no customer service phone number to get help from.