Hi,
IE 11 on both versions for win7,8 and 10 have user configurable settings for Tracking Protection and ActiveX filtering by site.
https://blogs.msdn.microsoft.com/ie/2011/02/28/activex-filtering-for-consumers/
Compare the browser settings for Tools>Tracking Protection and Tools>ActiveX Filtering
for developers, first go Tools>Internet Options>Advanced tab, check "Always record developer console messages". Save changes.
Then to find out if content on a web site has been blocked and the reason (IE security zone setting. blocked content - ActiveX filtering, tracking protection, google analytics blocking, XSS and same-origin issues) display the dev tool f12.
If this is an internal site (intranet site... see the File>Properties menu in IE) and your company is using Enterprise site mode lists or not, you should also confirm that the site is configured to use an appropriate Emulation mode (aka. documentMode)
see
https://docs.microsoft.com/en-us/internet-explorer/ie11-faq/faq-for-it-pros-ie11
If possible include links to the website(s) that you are having problems with your questions.
Regards.
Questions regarding Internet Explorer 8, 9 and 10 and Internet Explorer 11 for the IT Pro Audience. Topics covered are: Installation, Deployment, Configuration, Security, Group Policy, Management questions. If you are a consumer looking
for answers or to raise a question, it's highly recommended you head on over to http://answers.microsoft.com/en-us
Rob^_^