QuoteIf you have multiple drives, my advice is to set Windows to create a PF on each drive and let Windows manage all of them.

Why? Is this a laptop with the battery removed?

Panos,

Well I guess that I learned a little something today.  I could not figure out where you got the data in that little clip that you posted at "July 04, 2021, 12:27:11 PM".  Finally after a lot of internet searching I was able to find my version of that data.

As I mentioned in my earlier post I never get those little yellow triangles, and I do the same thing as you---meaning that I turn my computer off every night (or whenever I will not be using it for a long while) and unplug the power cords.

Having said that, when I compared my Task Scheduler data to yours it seems that the difference is that you seem to have set a schedule manually, whereas in my case I have not set a schedule (or a "trigger").  I have simply allowed Windows to do whatever it needs to do with Windows Defender.  (See my clip below)

So maybe if you delete the "trigger" for your "schedule" that you have set up for "13:00 every Sunday. . ." and just let the "trigger" stay blank perhaps Windows will just go about doing its business automatically and not bother you with the yellow triangles.  It is worth a try anyway.

v_v

Panos,

Okay, after I had another night to sleep over it, if I try to integrate what Bill/Digerati said with my own comment the result might be the following:

1.  Windows Defender is working all the time anywyay.  So it will run its scans when it needs to;

2.  Therefore setting a scheduled scan is somewhat redundant as Bill/Digerati said;

3.  It seems that a possible reason why you might be getting the yellow triangles is because you have set a scheduled scan with various "triggers", "conditions", and "settings" (see the tabs in your Task Scheduler);

4.  The combination of your triggers, conditions, and settings may be blocking your "Scheduled Scan" when you are working at your computer and also when you turn it off;

5.  If you wish to continue with your scheduled scans you can probably review and revise your triggers, conditions, and settings so that the scan happens in the background at various idle moments, while the computer is still in use;

6.  If you get rid of your scheduled scan "trigger" altogether, then Windows will just go ahead and do what it automatically does anyway, which is to constantly work at 'defending' your computer.

So it would seem to me that either # 5 or # 6 should eliminate your problem with the yellow triangles, and if the Scheduled Scan trigger is redundant then why not just get rid of it altogether and let Windows Defender do its ongoing work?

v_v

v_v,

Thanks for that!

Quoteafter I had another night to sleep over it...

As a matter of fact I created that scheduled scan after the default one didn't work (the day I posted about the issue here). Now, I deleted it.

I think that I won't do anything else, just waiting for a few days, if the warning appears again. If yes, I will post here with a screenshot.

If not, I will buy everyone here a coffee.  :D

Something changes.

See the today's attachment.

That code tells you that either the scheduled scan could not be run (it was late at night so perhaps the computer was turned off) or the computer was not idle.
Thread explains what was said by Bill and v_v here
https://www.windows10forums.com/threads/windows-defender-error-code-0x8007042b.8895/

Make sure you have removed the scheduled scan you set up. In Defender be sure the scan is not set for a time when the computer is off.

This is what I have today.

Before, I right click the scheduled task and chose Run, but after 3 hours the computer was working so hard so I ended it.

Panos, when you open up Defender and click on Virus/Threat Protection, does it show a recent scan done under Current Threats?

Defender should be scanning all by itself without any human intervention or need to run on a defined schedule ...

Quote from: winchester73 on July 10, 2021, 05:24:38 PM
Defender should be scanning all by itself without any human intervention or need to run on a defined schedule ...

Exactly. Mine, needs my intervention. I know that something is wrong, but I don't know how to fix it. I searched everywhere but I don't see something I have set wrong.

This is what is shown in Virus & Threat protection. It is the scan I manually did last Saturday, when I got the yellow triangle-warning.

1549950 files scanned!  No wonder it took so long to complete the scan.  The scan of my laptop took 58 seconds but that was for 40913 files.  Perhaps it is time to do a file cleanup, deleting unnecessary files and/or moving files not regularly used to a backup -- whether it be a USB or the cloud. 

Quote1549950 files scanned!

I thought that was normal!

But indeed, it's ten years' work in there.

Well, this computer is 6 years old, but has nearly 20 years worth of data on it. I'm looking at a nearly 46,000 files taking 1m 21s.

While you are scanning 1.5 million files, it is still taking a long time. Is that a hard drive?

I agree with Corrine and you need to cleaning up, deleting duplicates, and moving some files.

That's how I explain the "task can't be completed because the computer is not idle anymore" error. The computer can't be idle for so long.

The point is I don't have duplicate files and all are necessary for me there. Even though many of them will never be in use again. Yes, it's a hard drive. 1 T, and I have around 580GB free.

QuoteEven though many of them will never be in use again.

Then I would recommend you move them off to a couple back up drives. If they will never be used again, then don't need to be scanned over and over and over... and over again.

Hi, All!

For some reason, my Windows Defender task has been fixed (I hope).

It's the first time I have these screens. And the files scanned? It says 14670! No idea why and how. I did nothing at all.

No clue about anything. It just happened and it happened for a FIRST TIME.

It seems that all these trial and error efforts were a shock to it! You know, like an ICD!  ;D