I have Bitdefender Total Security and when I try to stream Netflix I get error codes, but when I disable the protection features in Bitdefender and restart the browser Netflix streams work fine.
jktorres28 seam to have similar problem if it originates from Chromium
/index.php?/topic/80410-bitdefender-blocking-netflixwidevine-on-brave-browser/&tab=comments&do=embed&comment=288712&embedComment=288712&embedDo=findComment#comment-288712" style="height:261px;max-width:502px;">