Twice I was typing a forum response and was asked to click on an update to the above software (I closed the window instead). Is one of the popups bringing it up.
It could be from an ad.
https://www.chess.com/forum/view/community/reward-earn-diamond-membership-by-finding-and-reporting-bad-ads
But it could also be due to malware on your system, so you should probably scan with a reputable tool.
Twice I was typing a forum response and was asked to click on an update to the above software (I closed the window instead). Is one of the popups bringing it up.