I am using a paid version of AVG but have been told that Windows Defender (part of my w10) does an equally good job and anyway shuts down at start up if it detects that other anti virus software is running. If Windows Defender doesn't close itself and keeps running, is it a bad idea to have 2 ant- virus packages running at the same time? Also, how can I check that Windows Defender is or is not running? Is it possible to show a WD icon on my desktop?