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Malwarebytes Threat Scan making Windows Unresponsive?

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#1 zukertort


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Posted 22 August 2014 - 07:41 AM

It appears that Malwarebytes' threat scan is making Windows unresponsive during the time of the scan.


Is this normal?


I noticed this because Windows was becoming unresponsive about the same time every day. I opened Task Manager and listed all processors, and I also opened Resource Monitor. When the computer became unresponsive, the only program taking much in the way of resources was MBAM, which appeared to essentially be taking 100% of the CPU for one of the cores on my computer. (So it was listed as 12% of CPU).


I have 8 cores on my computer, so I don't know why it would make Windows unresponsive, but it does. Windows became responsive again a little before the MBAM process stopped (based on the timing of the log file MBAM produced).


By "Unresponsive" I mean the following behavior occurs:

My auto-hidden sidebar does not unhide when I move the cursor to it.

When I right-click on a folder or file, the context-menu does not come up (or takes a long, long time to do so).

When I click "Open Monitoring Resources" button, it does not pop up for over a minute.

Most things I try to do in windows just make the cursor switch from arrow to the blue circle.

Some programs will show up as "Not Responding" in task manager .


In the "Automated Scheduling" module of MBAM, it says that this scan is scheduled for around 2:30 AM, but instead it was running around 2PM. This is one reason it took so long to track it down.

Edited by hamluis, 22 August 2014 - 11:49 AM.
Moved from All Other Apps to AV/AM Software - Hamluis

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#2 rp88


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Posted 22 August 2014 - 08:13 AM

i have had mbam (the free scanner version) freeze itself during a scan once or twice, but it only affected the mbam program itself and only lasted a second or three. it happened with the newest version 2.something  but the older version 1.75 did not cause these very short freezes. it may have something to do with the way the new once checks for updates before running a scan.

Back on this site, for a while anyway, been so busy the last year.

My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB

#3 quietman7


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Posted 22 August 2014 - 01:49 PM

If you have discovered an issue with the "Automated Scheduling" module of MBAM not working properly, then you should start a new topic in the Malwarebytes Anti-Malware Help Forum and report it there so the development team can investigate and correct the problem.

You can also contact the Malwarebytes Consumer Support Team (Submit a Ticket) for individual assistance.
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