Helo. Can anyone help me please? I am trying to use "Messenger for Desktop" to phone Facebook friends. I can hear them but they cannot hear me. My inbuilt-microphone is selected as default & works with my Zoiper Softphone. The suggestions here (https://support.mozilla.org/gl/questions/1228717?mobile=0&fpa=1 ) do not work One of the reasons I am always slow to update Firefox (I have 66.0.4) is that the "help" available always has been rendered useless by innovations. I believe "desktop for windows" requested mike access once, & I believe I hit "allow".....but there seems no way at all to verify, check, change or modify this permission! If I hit (i) / Permissions / Cogwheel / Microphone I simply have an empty list for sites than have already asked permission. The "allow" / "deny" options are long gone. There is no way to "force" a permission or set one up. Similarly this page (https://support.mozilla.org/en-US/kb/how-manage-your-camera-and-microphone-permissions ) has suggestions that do not work.. If I go to the website (https://messengerfordesktop.com/) A request does not pop-up as stated. And the section on managing permissions is also outdated. When you arrive at Permissions/Microphone/Settings there is no way to INPUT a site. There is only a blank list for sites that have already asked permission. Please can somebody tell me how to FORCE a permission?