Found fix that worked for me ...
I used the IE11 server, Win7 and the latest version of Adobe Reader XI, which I just updated.
On the website I came across, I used <object > </object > to input the embedded PDF (it was a CQ5 component, if that matters).
I did not need to change the html - this is what I did:
1) Go to internet settings in IE
2) Go to Advanced
3) Click "Reset ...". I also clicked "delete personal settings", since I mainly use IE to test web development, so there is not much ...
4) A computer restart is required, so do it.
5) When you return, open IE11.
6) It will tell you if you want to use the default settings / accelerators. I said YES (I usually always said NO to this, in the past).
7) Open the site and enjoy the success.
He also installed this site for me, so I know something good happened. http://acroeng.adobe.com/Test_Files/browser_tests/embedded/embed2.html
I tried to fix the "TabProcGrowth" fix in the registry (some other solution that I found earlier), but that didn't work either. Only rebooting IE for the kiss worked for me.
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