I was using Parallels 9 with everything working fine. One day I was not able to access the internet via Internet Explorer. Oddy, though I can access Apple.com and one other site but no others. I have run the Windows diagnostics and tried everything I have found on the Parallels forums regarding this. (Using the Mac's settings, etc.). I upgraded to version 11 (I'm on 10.9.5) a couple of days ago but still can't access the internet via Windows. Mac side works fine.