firefox is unable to open https pages like yahoomail.com and gmail.com with the following error. Unexpected response from server Firefox doesn't know how to communicate with the server. * Check to make sure your system has the Personal Security Manager installed. * This might be due to a non-standard configuration on the server. what is solution . -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list