Both running alongside under Windows 8, WindowsDefender disables itself automatically after WSA is installed. I know you can never have 2 antiviruses running simultaneously but I thought WSA was light enough to share its reign with WindowsDefender. Can anyone confirm this? :D
Best answer by RetiredTripleHelix
Go into Advance Settings and Uncheck and Save All if you want Windows Defender on with WSA.
EDIT: I have been running both in my Win 8 VM's without issues for months.