Version's & Information: Windows 10 - Microsoft Version/Build: 19041 (Latest) Kaspersky Total Security Application Version: 21.1.15.500 © FireFox Browser Release Version: 83.0 ____________________________________________________________________ Full Info / Rambling: I am not getting no “error” with my YouTube Logging me out, It simply logs me out when I try to Add stuff to my Playlist on YouTube, View my Library, View my History, or edit playlists I have on YouTube is the main way it triggers. It doesn't seem to log me out when I go to my subscriptions or explore YouTube video to video. But logging back in does not log me in when I do it, it only temporarily logs me in and then trying to refresh that page or etc just causes the same bug and then it will It doesn't seem to have this issue on most Google websites just YouTube currently. Many Others Having Issues: ○ 3 Months Ago: Link○ 2 Months Ago: Link○ 10 days Ago: Link Reddit Firefox Users post: After a Recent FireFox Update & Kaspersky Update I believe as well, Many other firefox users using Kaspersky have had similar issues: https://www.reddit.com/r/firefox/comments/jzb7n5/after_the_recent_firefox_update_using_youtube ____________________________________________________________________ To Long Didn't Read of the above (TLDR): Issues: ‣ Logs out of google related websites, Primarily YouTube ‣ Can’t Comment On Channels ‣ Can’t Subscribe to Channels ‣ Cant Use any of the side bar options besides view Subscriptions or home (home and subs doesn't seem to log us out) Other Moderators or Staff Involved Thus Far: Who Have been Involved with a issue that pertains to this one: @Igor Kurzin @Flood and Flood's wife @petsy Users affected not resolved: @tyler @Taff224 Logged in youtube, can't post comments, subscribe and no notifications: (resolved) https://support.mozilla.org/en-US/questions/1297918 ____________________________________________________________________ Quote: @noisywan It’s safer to use another browser like advised above. If you MUST use Firefox + Youtube + KIS, then you have the option to disable `Script Injection` function described in the link below. (Caution: This will disable protection for all browsers installed on your system. Do it on your own risk. Remember to turn it back on) https://support.google.com/youtube/thread/72861760?hl=en I cleared my cache, cookies, wiped everything reinstalled Firefox and lost tons of progress just to find out that It might be the Version I am on in Kaspersky OR its something to do with Script With google having Outages and YouTube as well having been offline for the first time ever, having to go back to google chrome or worse Microsoft edge does not help our fears any.