Hi Do you have an example of a video that will not play? This will help us to look into this issue here for you.

MSN.com is my home page. any or all of the videos post there. The problem is intermittent. Also, it doesn't retain settings like my location for temperature reading. Again, these are only problems on Firefox, not other browsers.

Boot the computer in Windows Safe Mode with network support to see if that has effect. *[https://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/] *[https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10/] You can check the Web Console for media related messages. *"3-bar" menu button -> Web Developer or Tools -> Browser Tools -> Web Developer Tools *https://developer.mozilla.org/en-US/docs/Tools/Web_Console See also: *https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows *https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues *https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox