we have a legacy app that still uses IE 11 and Acrobat reader add-on to display PDF files.
After upgrading to Acrobat Reader DC 20 in our Citrix environment we started getting users complaining that after working in the app and with PDF files opening properly suddenly we get a grey screen with a progress bar saying "Initializing" and that's where it gets stuck.
Only closing the browser and reopening the browser which actually causes two new AcroRd32.exe process to open allows us to view PDF files until the issue reoccurs.
We've got nearly exactly the same issue - legacy app that needs IE11, can upload one PDF but then hangs on the second or third. We get 2 x Acrord32.exe start with the one of the using 20% CPU. Until either of these is killed IE is hung.
Any clues on what might be causing this greatly appreciated.