Defender appears on the processes list in Task Manager. MSASCui.exe.
Open Windows Update and see if you need any defender updates.

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Mark L. Ferguson
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"baltsteve" <baltsteve@discussions.microsoft.com> wrote in message
news:DCA9CD8F-EF5E-40BF-A7C6-8F0C128E0378@microsoft.com...[color=blue]
> When I start up my computer, I get pop up saying Windows defender is
> turned
> off with the red shield with the X on the bar. I try to turn it on but
> search
> says no new definitions found. However, when I click on START button and
> programs and click on Windows defender, I get green shield with checkmark
> in
> it. Is it on or off? If off, how do I turn it on.[/color]