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Hi,

 

Just had a BSoD (technically a Green Screen of Death) out of nowhere, with the file mwac.sys being the culprit, so thought I'd report it here so should anyone else get this it can be looked at.

 

I am running Windows 10 Build 2004 (Fast-track insiders build) and the Malwarebytes Premium version 4.0.4.49. Update version 1.0.17453 and Component package version 1.0.793 

 

I have attached the required mb-check file

mb-check-results.zip

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Here are the mbst-grab-results as well.

 

Please note that I first ran the Repair part of the Malwarebytes Support Tool accidentally, which reinstalled MBAM and rebooted the machine. I then gathered the results by running the tool again. This may have skewed the logs for you if the repair function removed the previous issue logs.

 

 

mbst-grab-results.zip

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1 hour ago, TheGift73 said:

Here are the mbst-grab-results as well.

Do not if it related or not, Are using any firewall controls to block "ig.exe"?

Quote

FWPM_LAYER_ALE_RESOURCE_ASSIGNMENT_V4
MB IG2Prot ALE Resource Assignment Filter PID and Path: [00000000000023E0]"\Device\HarddiskVolume6\Users\Dickie\AppData\LocalLow\IGDump\bldqhnsugkuajcfqjncylhgqsqqswvxj\ig.exe"    Add rule to block socket bind attempts by App PID and Path, even in raw mode.

FWPM_LAYER_ALE_RESOURCE_ASSIGNMENT_V6
MB IG2Prot ALE Resource Assignment Filter PID and Path: [00000000000023E0]"\Device\HarddiskVolume6\Users\Dickie\AppData\LocalLow\IGDump\bldqhnsugkuajcfqjncylhgqsqqswvxj\ig.exe"    Add rule to block socket bind attempts by App PID and Path, even in raw mode.

 

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@Porthos I'm not seeing anything related to ig.exe in my current firewall rules.

 

I'm running Windows Defender Firewall, and haven't ever made any specific changes to this with the exception of letting certain programs though. Those changes though would have been made a while ago now.

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Just now, TheGift73 said:

@Porthos I'm not seeing anything related to ig.exe in my current firewall rules.

 

I'm running Windows Defender Firewall, and haven't ever made any specific changes to this with the exception of letting certain programs though. Those changes though would have been made a while ago now.

Just asking. There have been people looking on how to block that and MB needs it for the cloud component .

 

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Hi @TheGift73,

Thanks for the report. Those WFP filters involving ig.exe are normal.

When the GSOD occurred, what sort of activities were currently being performed on the computer?
To confirm, has this only occurred once?

Could you zip up and provide us with the following file please: C:\WINDOWS\MEMORY.DMP
You will unlikely be able to attach the file to a forum post. In which case, please upload the file to a file hosting service of your choice (Google Drive, Dropbox, WeTransfer, etc) and provide a download link.

Thank you!

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Hi LiquidTension,

 

I was just watching a TV show via VLC (not streaming in VLC, just watching a previously downloaded one)

 

Here is the most recent dump file attached.

 

Note that I have just upgraded to Windows 10 Version 2004, Build 19541.1000 since the issue happened.

010820-17859-01.7z

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Hi I'm having the same blue screen.After the reboot, MBAM comes back with the layer "malware and PUP protection" turned off. I can turn it back on and the blue screen happens again a couple of hours later. So far I have downloaded the support tool and ran repair which removes then reinstall MBAM, but the issue persists. 

The first BSOD happened yesterday (Thursday) morning. and so far it has happened 4 times. 

Thanks

BSOD GSOD MWAC.sys

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@TheGift73 Thank you for providing the dump file. This is consistent with the other Web Protection blue screens we've been seeing. A fix is currently being worked on and we hope to release it shortly. In the meantime, Web Protection will need to remain disabled.

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I've also been seeing this BSOD where it says system failed due to mwac.sys.

Should I just disable web protection or uninstall the entire thing?

I've only had chrome up with a few windows open and it has happened to me twice with my system freezing up after 10 minutes or so leading to me doing a hard restart.

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You could either disable Web Protection in your current version, revert to an earlier Malwarebytes version 4 component package version (download URL) or revert to Malwarebytes version 3.x (download URL).

If you disable Web Protection, you may want to also prevent the real-time protection disabled notifications from showing (until you re-enable Web Protection). The option can be found in Settings -> Notifications.

If you revert to a previous Malwarebytes version, you will need to disable the "Application updates" settings found in Settings -> General. Once we release a fix, you will need to update to the fixed version manually.

Edited by LiquidTension
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What the...I was planning to install it again after two months without MBAM lol. I'm done with this app. For paid product ppl shouldn't be beta testers. I would expect flawless product.

Can delete my post or account if want. GL.

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1 hour ago, justforup said:

What the...I was planning to install it again after two months without MBAM lol. I'm done with this app. For paid product ppl shouldn't be beta testers. I would expect flawless product.

Can delete my post or account if want. GL.

Good luck in your search for a "flawless" software product. Let us know if you ever find that unicorn.

 

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