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Windows Defender scheduled scan

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DR M:
Hello.

Ever few days, Windows Defender gets that yellow warning triangle, that a scan is needed. Is there a way to do that by itself like Malwarebytes does every day?

Should I set it my self as a scheduled task or is there a setting I can enable for that?

v_v:
Panos,

Are you using Windows 10?  If so when you right click on the Windows Security icon on your taskbar and choose "View Security Dashboard", are all of the settings that you can find through the links on the dashboard set to "On"?  There are several categories of links there and all of mine are set to "On" and all of the scans happen automatically for me.  I never get that yellow triangle anymore nor do I have to do anything manually.

You can also get to the same pages by clicking the "Start" button, "Settings", "Windows Security", "Open Windows Security".

v_v

Digerati:

--- Quote ---Ever few days, Windows Defender gets that yellow warning triangle, that a scan is needed.
--- End quote ---
I'm not getting these. The only time I see a warning that a scan is needed is when the computer has been turned off for several days and a scan has not been performed recently. Most notably I see this on my notebook because I don't use it often.

Microsoft Defender (formally Windows Defender) is designed to run when the computer is not being used or when you go idle. If you always turn off your computer when done using it, that may be part of the problem (though technically, telling you a scan is needed is NOT a problem). I just let mine go to sleep.

You can look in Task Scheduler to see when it is scheduled to scan. If no task is scheduled, it just scans based on the time it last scanned. If you set a schedule, it will scan at that time - unless you power off then it will attempt to scan when you come back.

My advice is to scan, then just let your computer go to sleep. Much happens to our computers when we are away - good things. Windows updates, housekeeping tasks (indexing, defragging and more) and our security programs (not just Defender) scan.

If you want to change the scan times and frequency, see How To Set Your Own Scan Schedule For Windows Defender Antivirus and scroll down to "Schedule Updates With Task Scheduler" (don't ask me why it says "updates". I think he meant to say "Scan times").

For the record, I recommend once daily scans though weekly is probably sufficient since Microsoft Defender is already scanning everything in real-time anyway.

DR M:
Hi, v_v and Digerati.

Yes, I use Windows 10, and everything is fine in the Security at a glance window.

The problem is that every few days I'm getting the yellow triangle warning about not a scheduled scan done.


--- Quote ---You can look in Task Scheduler to see when it is scheduled to scan. If no task is scheduled, it just scans based on the time it last scanned. If you set a schedule, it will scan at that time - unless you power off then it will attempt to scan when you come back.

--- End quote ---

There was a scheduled scan for today, but no scan is performed while I am using the computer.

I always shut it down (not send it to sleep).

I created a new task for every Sunday and I will see what is going to happen tomorrow.

Digerati:

--- Quote ---I always shut it down (not send it to sleep).

I created a new task for every Sunday and I will see what is going to happen tomorrow.
--- End quote ---
Well, just remember your computer has to be on (or at least in sleep mode) for the scan to happen. If you shut it down, you likely will see your yellow warning again. That is normal behavior.

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