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Slowdown with Windows 2004 and MWB

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Similar to the linked post, I bit the bullet to install Windows 2004 yesterday to a non-work computer for trial, and glad I did.  It seems I'm another victim of the slowdown/hang with both Malwarebytes Premium and the new 2004 feature upgrade.  My son was working on some projects yesterday and complained about it, but I didn't think anything of it till I saw an article this morning.  I've not updated to MWB yet, offering a bit of a test bed if there is anything to be learned.  I did notice that shutting off all real-time protection from MWB does seem to make it usable, but obviously not preferable.


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I'm sorry that you are impacted by this issue.  That said, you should be able to disable just the Ransomware Protection component to restore normal performance and keep it disabled until the issue has been resolved.  Your other option is to revert to an earlier build of Malwarebytes which is unaffected by the issue.

In the meantime, if you would like to aid Malwarebytes in attempting to determine the cause and find a solution for this issue, please do the following to provide diagnostic information and logs:

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Once the issue is fixed a member of the Malwarebytes staff or one of the forum volunteers will respond to this topic to inform you that the problem is fixed, most likely with a link to the latest version and/or instructions on updating to the latest build manually.

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4 minutes ago, RogerInMD said:

Thanks, I try to run with the Ransomware setting only off and see how it does.

mbst-grab-results.zip 5.09 MB · 0 downloads

I also suggest restarting the computer as well.


Pending File Rename Operations


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I had twice already before running the support tool.  I saw that too.  Why is the MWB service not asking for a restart if that is still required?  It actually asked for a restart at the SAME time as Windows did yesterday after installing Windows Version 2004...  I wonder if the two conflicted and are locking each other?

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3 hours ago, Porthos said:

The user already has fast start disabled.

Ah, I didn't see that mentioned. That is the recommendation whenever there are pending file renames and OP said they restarted twice before running the report tool so I'm curious what a third reboot will do. What are your thoughts on OP's question about why Malwarebytes isn't aware of the pending file renames and also why the files didn't get renamed after two non-fast startup reboots? 

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5 minutes ago, MrPNutts said:

Ah, I didn't see that mentioned.

It is in the logs that I believe you can not access.

6 minutes ago, MrPNutts said:

What are your thoughts on OP's question about why Malwarebytes isn't aware of the pending file renames and also why the files didn't get renamed after two non-fast startup reboots? 

Could be a glitch in the logs. Either in the record of fast start being off or detecting the file renames. Could just be a 2004 issue.

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I don't have a separate thread, but wanted to chime in on this issue as I was experiencing the same problems with slowdowns, freezes, etc. with Chrome & other programs. Like others, I attempted to disable certain modules namely Web & Ransomware Protections, however only with completely disabling MWB did the issues fully disappear. I was about to start a thread this morning with logs when I received a notification for a new version of MWB that I didn't see announced in the forums. After updating to version & component package 1.0.967 I've not experienced any of the previous issues reported for almost 24 hours now. Idk, if the new version's "fix" will hold, but thought I'd mention it anyway in case others find it beneficial.

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6 hours ago, Etain said:

I received a notification for a new version of MWB that I didn't see announced in the forums.

It was announced in the beta section because it is a beta and you must have beta updates enabled.


Edited by Porthos
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Remarks for  @Etain   

Hurrah for having the current Malwarebytes beta version.  For remarks about your experience, in future, you ought to post in the MB4 beta area https://forums.malwarebytes.com/forum/251-malwarebytes-4x-beta/

As to the general conditions you described, in order for the Malwarebytes internal team to confirm a bug or defect, they need support logs from the machine  and they have to be able to duplicate the issue.  Being able to replicate is so important.
And some of the key information would include having list of all opened / running apps at that time,
And what specific program (s ) are "freezing"  if any.
And as to Chrome browser, beyond deleting all cache and history, and insuring that Chrome does not reload the page(s) from last session at its start,  I have a tip for Chrome and other browsers

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One other thing I meant to mention,  If encountering some issue with Chrome or another browser, try using the EDGE browser for a while to see whether it does better.

Another strategy is to use Task Manager  ( or Process Explorer) to "End task" on each Chrome process, before switching browser or using a different one.

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Just so all readers are aware....

A new program version along with a new Component package for Malwarebytes for Windows was just announced on June 30th 2020.

Please be sure that you see the announcement



The latest MB version  is    with Component   1.0.972 



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