I have been unsuccessful updating two machines to Windows 10 1607. During my latest attempt Firefox would not display its browser screen. If I looked at task manager I could see firefox32* loaded. If I tried to start Firefox again, I would get another firefox32* but no browser screen. I tried starting Firefox holding down the shift key, no add-ons, but no change. I uninstalled Firefox and reinstalled yielding the same result.
I rolled the machine back to the previous version of Windows 10 and Firefox worked fine. What am I doing wrong? I have been unable to find any other information on this problem.