I apologize if this is off-topic, but I found a post dealing with acroext.exe and I hoped this might be a signal that someone might be able to answer my question...
Thanks!
Joe
I have Acrobat XI and it's in my C:\Program Files (x86)\Adobe\Acrobat 11.0\Acrobat\AcroExt\ folder.
right clicking on it shows a file description of Adobe Acrobat Extension Framework.
so, if you have Adobe products installed, leave it, it's legit.
what it physically is needed for, I cannot say.
the Adobe forums would probably be best; https://forums.adobe.com/welcome