I just received the updates to my NIS 2009 from 16.2to 16.5. when I rebooted NIS shut off Windows Defender( I assume by default, just like it did when I first downloaded NIS 2009 back in October) I like to keep this running so I turned it back on. Then I shut down my computer and restarted it. about 2 minutes after everything booted up A windows screen came up and said windows defender is turned off. I restarted Windows Defender and then shut down the computer again. Then I restarted and the same thing happened again. Windows defender shut down. Is Windows Defender not compatible with NIS 2009 anymore? Is anybody else having this problem?