When I open a form fillable pdf in 1E11 with acrobar reader it will usually (always) open correctly the first time. Then when the form is closed (the IE tab is closed) the next attempt to open the form results in a gray screen (usually). If at this point I use task manager and close one of the two entries for acrobat reader the form will open by itself (grey screen goes away and form is visible).
In case you were wondering: We are required to use IE11 because we use silverlight and we need acrobat reader because we submit the form - currently the only browser to my knowledge that support silverlight and acrobat plugin are IE8-IE11. Firefox will not use acrobat plugin and chrome will not run silverlight.
I really like using my Acrobat Reader DC (version 2015.017.20053), especially the comment function which I am using extensively to highlight text in pdfs (as a replacement of what would formerly have been underlining text in printed books). I am using a Dell XPS-8700 PC with Windows 10 Home, 64bit, 32 GB RAM, Intel Core i7-4790 @ 3.60 GHz. 59ce067264