Internet Explorer has a non-standard P3P privacy policy implementation (what a surprise). This prevents cookies from being loaded in iframes.Google Tag Manager uses an iframe. Does this cause problems with obtaining analytics from users of IE?
Google Tag Manager Uses iframe, is this problematic for IE?
google analytics;internet explorer;cookie;privacy;google tag manager
It doesn't cause problems with obtaining analytics from users of IE, you'll get clear analytics. iframes are causing problems for Internet Explorer users in general, but google tag manager is not using them all the time.