After having installed KIS2021, I now can’t sign out of Youtube when using Firefox.
Edge Chromium and Chrome appear to have no issues.
Also, I can’t add a video to a playlist using the plus sign under video window: nothing happens when clicking the “plus sign”.
Also, I can’t add a video to a playlist when hovering mouse pointer over video preview tile and over the Watch Later icon : A dialog box opens instead and asks to sign in when it appears I am already signed in. When I click sign in, the page changes to an error 405 page and with this message: The request method
GET is inappropriate for the URL
If I disable anti-banner protection entirely, I get no errors and all Youtube functions work. BUT I get Ads in videos I watch. Grrrr!
If I use the Kaspersky plugin 2021 in Firefox to allow banners in Youtube, problems remain,
I am running Windows 10 Home x64 Build 19041
KIS 126.96.36.1990 (a)
Firefox 79.0 (64-bit)