I don't sign in to youtube a lot to leave comments on videos, so unsure when this started. Maybe with v 71? Sometime in Nov/Dec '19 I would guess. If you click the sign in box on the youtube home page, nothing happens. Do not get a popup for user/pw as expected. No error message. I thought it was a script blocker setting or ad blocker setting so I temporarily disabled those but it didn't matter. I read about clearing cookies and adding exceptions for accounts.google and accounts.youtube but that did not help either. I CAN sign into google though from the google home page. These use the same credentials. So, its something with the youtube site. Ideas? Thanks.