When installing Bitdefender on your PC, Windows Defender isn't uninstalled, u'll still get KB-security-updates for Win. Defender or MRT, like any other updates for Windows 10 ESU or 11....
...Anyway I uninstalled BDIS with uninstall tool...cleaned registry and remnants using Ccleaner and going through folders myself......Re installed BDIS 2015 throgh an offline installer downloaded from this...
I uninstalled then reinstalled and still not working! ?? I have tried all their solutions but still not working! So hopefully they will give you a solution!...
...Ps: When BD says to need a restart for application update itself (as shown in notification with a red dot), is it safe to uninstall it then only restart PC if want to uninstall it from the PC?
...So the next course of action for the 2 other Samsung devices was to uninstall it from the google play store as well as to remove it from bitdefender central as well....