Home Forums Windows Help Windows 10 Reset, Windows Defender Ok? Forum Rules | Contact Forum Editor | Report a Post Windows 10 Reset, Windows Defender Ok? Narendra 10:55 02 May 2017 Locked Hello, I reset Windows 10 to clear junk. Please advise whether I need to install any other antivirus software other than The Windows Defender, which already comes with the system. I want to use the Defender only. Is it ok? Thank you. Govan1x 11:12 02 May 2017 If it was ok they would sell it. So the answer would be no. If you back it up with Malwarebytes Premium or something like that it might be ok. This thread is now locked and can not be replied to.