Up graded my Windows 8.1 Laptop to Windows 10. Now both Windows Defender and Norton Security both appear to be on. I can't believe that is normal operation.
I'm having a similar problem...every time that I turn on my computer, Norton Firewall has been shut off. Win 10 then asks don't I want to use Win Defender instead. Have reloaded. Can't get it to stop, very annoying. Most, but not all, times Win Defender is also off.