I've been having a compatibility issue with the "Yontoo API" add-on from Yontoo LLC in Internet Explorer 9 (and probably 10). This is apparently a questionable add-on only available for IE (although it doesn't even register with IE) that deals with Facebook Layouts or something. Many users have reported that it registers as malware with their AV. I was just wondering if there was any way I could temporarily disable this add-on when users visit my site, via html/xhtml, php, javascript or any other method. Thanks in advance, hope you have the answers I want (as I'm fearing this might not be possible).
Sorry, but the only thing to do would be to notify your users that this plugin causes problems and ask them to disable it. It's just not possible to disable add-ons programmatically.