Cant disable auto protect.

So i am having this issue.I just upgraded to the latest build of win 10 from the first release build via win update.Now the thing is i can'disable autoprotect by right clicking on the icon when first start my PC.It works but after some time it doesn't work anymore.Even if  i try to disable it auto-protect turns back on.I can disable every other feature just fine but autoprotect refuses to  turn off.I reinstalled norton after uninstalling it using norton remover still same issue.