Normally I would agree with no rolling back, but Oct, 2017 there is a incompatibility problem between VMWare and Adobe Flash (Shockwave Flash crashes with vSphere Web Client and vCloud Director (2151945) | VMware KB ) - so the Main point is we need to understand the various versions/extension that in the Zip of Adobe (example: fp_27.0.0.130_archive.zip), and what all extension do, as for example how is flashplayer25_0r0_148_win.exe different then flashplayer25_0r0_148_winax.exe other than above statement on ActiveX .. as I've just wasted over 4 hrs with various versions of Browsers but nothing seems to work ..