Norton Antivirus and Windows Defender Working Simultaneously
I just got my notebook back from tech support. It was fully formated and windows 8.1 reinstaled, then I installed Norton Antivirus on it. After one or two days Norton user interface wasn't oppening, then I unninstaled and reinstaled the antivirus, but now, after reinstalation, Windows Defender and Norton Antivirus are working simultaneously. I suppose that's not normal. Is there anything I should do?