User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:71.0) Gecko/20100101 Firefox/71.0
Steps to reproduce:
Client certificate signed by a private CA installed in Firefox.
Webserver, where only some locations are secured by client certificate authentication. The CA root certificate is installed on the server. In my case I am using Apache http 2.4 with the following additional configuration for secured pages:
When opening an unsecured webpage on the server via https, everything is ok (so SSL is generally working).
But when opening a secured page, since FF 71 the browser is reporting the following error code without asking for the installed client certificate:
The browser should ask for a client certificate and then open the secured web page as do previous FF versions and other browsers like Chrome, Edge or IE.