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Mwac.sys crashed my computer

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Malwarebytes component file Mwac.sys crashed my computer earlier this morning so i got a Bsod on my computer.
Windows gave me the following Stopcode/ERROR-Code: KMODE_EXCEPTION_NOT_HANDLED

Failed process: Mwac.sys


I am not sure what i should do here, beacause this the first time for me that Malwarebytes has crashed my computer this way.


I have the latest windows version and is fully up to date with all updates.


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***This is an automated reply***


Thanks for posting in the Malwarebytes for Windows Help forum.

If you are having technical issues with our Windows product, please do the following:

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This feature is designed for the following reasons:

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I'm sorry you're experiencing trouble but we'll do our best to help.  First, please try installing the latest beta of Malwarebytes to see if that resolves the issue.  To do so, open Malwarebytes and navigate to settings by clicking the small gear icon in the upper right, then under the General tab scroll down to the Beta updates section and enable the option there, then return to the top of the tab and click the Check for updates button.  Once it finishes downloading and installing the update, restart the system and test to see if the issue is fixed or not.

Please let us know how it goes.


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By the way, if you could provide the following files they may help the Developers to investigate the issue, assuming the beta doesn't fix it:


They will likely be too large to attach here so you can instead add them to a ZIP file and upload them to WeTransfer.com, selecting the option share it as a link by clicking the circular ... button and selecting the option to share the file as a link, then post the link here once the upload completes.

If the BSOD does return the most likely cause is a conflict with Norton360 since both programs use web protection components, so you may need to either disable the Web Protection in Malwarebytes or disable the web filtering component in Norton or remove one of the products in order to resolve the issue as documented in this support article (it doesn't cite Norton specifically, however not every conflicting product is listed there, just some of the ones known to do so).

You could also try installing any program updates for Norton if any are available to see if that resolves the issue as the conflict may be specific to the version installed on your system, assuming a conflict between the two is indeed the cause of the crash.

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I checked your logs, and you've already got Norton excluded in Malwarebytes.  A reference on creating exclusions in Malwarebytes can be found in this support article.  I'm not sure of the exact steps for creating exclusions in Norton 360, but hopefully the details in this Norton support article prove useful.  The items to exclude can be found in this support article.

Edited by exile360
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A new version of Malwarebytes has just been released which includes fixes for several BSOD issues.  Details on the new release can be found in this post.  It should be the same version as the beta, so since you already installed the beta you should be all set, assuming the BSOD you experienced was addressed by the fixes in the new build.

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