How do I fix this error: DF024: Unable to preserve original file at ... Error 32 The process cannot access the file because it is being used by another process.(Seq 1352). ?

I am installing creative the cloud Illustrator desktop app on a machine with windows 7 64 bit running in a domain environment.  The download starts and takes about runs for a bout 10 minutes and then stops with the error: DF024: Unable to preserve original file at "C:\Program Files\Adobe\Adobe Illustrator CC 2014\Support Files\Contents\Windows\AdobeLinguistic.dll" Error 32 The process cannot access the file because it is being used by another process.(Seq 1352)

I am logged in as a network administrator and there are no other apps except a web browser (Chrome) running.  There are no other users logged into the machine.

How can I see what other process is using the needed file so that I can fix it?

Thanks