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Why does Malwarebytes wait until I log on to scan?


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I have Malwarebytes paid edition and I schedule it to run at 3 AM. However when I log into my computer at 6 AM, it starts scanning and uses 75% of my resources.

How can I get it to run at 3 AM or how can I assign it a priority that puts it way in the background.

This happens on my computer and my wife's computer. It makes the login process very sluggish.

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Hello, DanFlak--

If your computer is sleeping or hibernating during the time the scan is scheduled to run then it will not run.

The best thing to do would be to edit the scheduled scan to a new time when you know the computer will be on.  Perhaps change it to 3PM?  This way the scans will run at a low priority in the background and you shouldn't notice any impact to your system.

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Taking 75% of the processor isn't low priority.

Also I thought Malwarebytes would make use of the Windows Task Scheduler. I use the task scheduler at work to run some programs between midnight and 8 AM and other programs on Sunday evening after the computer was logged off for two days. If I can do this, Malwarebytes should be able to do it.

My Microsoft updates come through in the middle of the night.

I am not accepting this explanation.

Edited by DanFlak
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What does unchecking this box do? Does it mean that if it misses a scan, it just doesn't do it? This is not an acceptable solution. I want a daily scan and I want it to run when it is supposed to and I don't want it using 75% of my CPU when I'm on the machine. Or is this asking too much?

I want this thing to run like all the other scheduled tasks on the computer - like Microsoft upgrades, like Windows Defender, like any task I create. If Microsoft can figure out how to do this and I can figure out how to do this then why can't the programmers at Malwarebytes figure out how to do this?

This isn't the my issue with Malwarebytes. I can't use the real-time web browsing protection because it is incompatible with Windows 10 and yields a blue screen of death (Bad Pool Error) as soon as I open a browser. So the solution for that is, "don't use it." Now you're telling me, "don't use the scheduled scan routine."

OK, if I want to make sure it runs every day, I can do that manually just like with the free edition. The free edition doesn't give me real time web protection - well neither does the paid edition.

Yes, I am pissed. Can somebody give me an answer I can use, or better still a product I can use?

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9 hours ago, DanFlak said:

I can't use the real-time web browsing protection because it is incompatible with Windows 10 and yields a blue screen of death (Bad Pool Error) as soon as I open a browser.

Have you installed the latest version?

Also I can verify (I use this daily on many different computers) this adapter is a cheap fix to replace your netgear adapter.  Never a blue screen.

https://www.amazon.com/gp/product/B008IFXQFU/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

As for scans my suggestion is there is a time during the day you can set the scan for example lunch time?

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I have several questions. If there is a latest version, how come I'm not notified of it? Doesn't the application do automatic updates? I will investigate the version i have and check out the update.

I will also check out the update to the netgear adapter. There's  a possibility that this could be the issue since my wife's computer does not have this problem and one of the differences is the adaptor.

Scheduling the application to scan at a different time is just a work-around and not a solution. I turn my computer on at 7 in the evening and go to bed about 10, I get up in the morning and am at the computer until I go to work at 8 and then I shut the computer down. My schedule at the computer is erratic.   I supposed I could run it manually when I leave the computer to go to bed but I can do that with the free version too.

I tired an experiment based on how I do things at work. There, when I leave work, I reboot the computer and leave it at the login screen (this is Windows 7). At home, I just leave my work the way I have it, and let it "time out." Last night, I closed everything and logged out. It's an inconvenience, but it might have worked. I'm going to try it again for a week before I claim success.

Typically, the scan reports are showing a run time of about 6:45 AM when I get to the machine after working out. Last night, the scan report was 3:10 AM. Of the two month's worth of logs I have, 4 scans prior to this morning happened as scheduled at 3:10 AM and not when I woke up the computer at about 6:45, so the program can do it. It's just not doing it consistently.

Also, when I get time this weekend. I am going to set up a Windows Task to wake the computer before Malwarebytes is scheduled to run and to keep it open at least long enough to get Malwarebytes running. If this works, I will write up the details.

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3 minutes ago, DanFlak said:

If there is a latest version, how come I'm not notified of it?

It is metered out over time.

3 minutes ago, DanFlak said:

I supposed I could run it manually when I leave the computer to go to bed but I can do that with the free version too.

Free version does not have real time protections. Automated scans are just a very small part of it.

 

4 minutes ago, DanFlak said:

Also, when I get time this weekend. I am going to set up a Windows Task to wake the computer before Malwarebytes is scheduled to run and to keep it open at least long enough to get Malwarebytes running. If this works, I will write up the details.

Sounds like a great workaround. If that does not work I might have an idea. 

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By the way, although I am complaining about this particular issue, it's only a minor annoyance. I do believe very strongly in the product. I'm "tech support" for my relatives, and advise them to use the product and have used the product to clean out their computers. Also, I am impressed with the responsiveness of the community.

For the past two days I have logged off the system before retiring for the evening instead of letting the computer "time out" and the scan went as scheduled instead of waiting for me to "wake up" my computer. I will continue this practice until Wednesday. If I have success with that, I will consider that to be a potential fix. I will report back on that.

Then I will be out of town for a couple weeks, so it will be a while before I can move onto step two: use a "wake up" routine.

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  • 2 weeks later...

The results of the log out at night are in. Every one of the scans ran in the middle of the night.

I also tried something else. I went to power options and told my computer to never sleep. I left other applications open and Malwarebytes ran as scheduled. This still isn't my preferred solution, so I will also try the wakeup call routine when I get a chance to program it.

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  • 1 month later...

I finally got back to working this issue - actually I was working another issue about Bad Pool Header BSOD. The fix for that was to do a clean re-install of Malwarebytes.

Fortunately, there is a tool for this at: https://downloads.malwarebytes.com/file/mb_clean This link downloads the file: mb-clean-3.1.0.1002.exe. Run this program and answer yes to all the prompts - answer yes to reboot the computer and wait for about a minute after the reboot. Answer yes to the prompt to re-install Malwarebytes. It's totally automatic, and it even remembers your key!

This seems to have fixed the BSOD issue and runs Malwarebytes on schedule even though the machine sleeps.

 

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