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Installing Steam games de-registers Malwarebytes from Windows defender.

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I finally found that cause of Malwarebytes not registering with Windows Defender. I had my Desktop that is almost a brand new installation have no problems with registering with the Windows Defender service. Then when I installed Steam, and installed (Hitman 2, Team Fortress 2, Apex Legends, and Borderlands Pre-Sequel, and Borderlands 3 (Noticed the problem before this installation), I noticed that it doesn't register anymore. I think it's something to do with the games installation messing with the C ++ Distributable, whatever it's called. It configures it a certain way where Malwarebytes Windows Defender registration can't communicate anymore with Windows Defender. 

I highly recommend that you figure out a higher-tech-smart method to register Malwarebytes with Windows Defender... that doesn't require C ++ modules of some sort that the Steam games use. Please look into this on your own machines / virtual machines. Do what I did, and install Steam, and a few games... I bet the same thing will happen. 

I am not going to give logs. Because I am going through some things. I have given logs before, and it produced no results. 

I totally hope this helps, and you appreciate me for finding the fix to the problem. (most likely.) 

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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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11 minutes ago, biomembrain said:

I am not going to give logs. Because I am going through some things. I have given logs before, and it produced no results. 

I am sorry but that is not how things work here.

We need logs to assist you.

To begin, please do the following so that we may take a closer look at your installation for troubleshooting:

NOTE: The tools and the information obtained is safe and not harmful to your privacy or your computer, please allow the programs to run if blocked by your system.


  • Download the Malwarebytes Support Tool
  • In your Downloads folder, open the mb-support-x.x.x.xxx.exe file
  • In the User Account Control pop-up window, click Yes to continue the installation
  • Run the MBST Support Tool
  • In the left navigation pane of the Malwarebytes Support Tool, click Advanced
  • In the Advanced Options, click Gather Logs. A status diagram displays the tool is Getting logs from your machine
  • A zip file named mbst-grab-results.zip will be saved to your desktop, please upload that file on your next reply


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You do not want to register Malwarebytes in Defender. You end up disabling Defender and reducing protection.

Malwarebytes works fine with Defender on. Currently you have them both on according to the log.


AntiVirus Information
Anti-Virus Product :     Windows Defender
    Up To Date:    Yes    Enabled:    On
Anti-Virus Product :     Malwarebytes
    Up To Date:    Yes    Enabled:    On


The reason many of us members are pushing Keeping Defender on is the following.

Malwarebytes does not target script files during a scan... That means MB will not target; JS, HTML, VBS, .CLASS, SWF, BAT, CMD, PDF, PHP, etc.

It also does not target documents such as; PDF, DOC, DOCx, XLS, XLSx, PPT, PPS, ODF, etc.

It also does not target media files;  MP3, WMV, JPG, GIF, etc.

Malwarebytes will detect files like these on execution-only.



Malwarebytes is not designed to function like normal AV scanners and uses a new kind of scan engine that relies mostly on heuristics detection techniques rather than traditional threat signatures.  Malwarebytes is also designed to look in all the locations where malware is known to install itself/hide, so a full or custom scan shouldn't be necessary, especially on any sort of frequent basis (like daily), especially since the default Threat Scan/Quick Scan checks all loading points/startup locations, the registry, all running processes and threads in memory, along with all system folders, program folders, and data folders as well as any installed browsers, caches, and temp locations.  This also means that if a threat were active from a non-standard location because Malwarebytes checks all threads and processes in memory, it should still be detected.  The only threat it *might* miss would be a dormant/inactive threat that is not actively running/installed on a secondary drive, however, if the threat were executed then Malwarebytes should detect it.  Additionally, whenever a new location is discovered to be used by malware the Malwarebytes Research team adds that location dynamically to the outgoing database updates so the locations that are checked by the default Threat/Quick Scan in Malwarebytes can be changed on the fly by Research without requiring any engine or program version updates/upgrades.

An AV will catch the file just by downloading it or just opening a folder with a detected file in it.

For example, you get an email with an infected attachment, Malwarebytes will not even blink until you run it yet Defender will detect it if it is in their database without even actually clicking on it. Remember the list of files Malwarebytes does not target.

Then I will leave you with this.

As good as Malwarebytes is, it is just a layer of protection.

Using a browser that has Ublock Origin and the Malwarebytes Browser guard enabled is also a layer of protection.

Not opening attachments from an email unless you were expecting it from a specific user during a specific time period.

Do not use Torrents. Do not install every free software you find. Do not click links in an unknown email. Go directly to the site listed in the email.

Having a monthly image of your computer on an external drive that is only connected during the backup is actually better than any protective software ever made. Macrium Reflect free is the program I use and place on every computer I service.



Edited by Porthos
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Also, if you have not restarted since you created the log I suggest you do so.


Pending File Rename Operations
c:\program files (x86)\microsoft office\updates\apply\filesinuse\0631b4ea-e968-42f6-8c2b-aab5044241dd\txfo\root\vfs\programfilescommonx86\microsoft shared\office16\msoxmlmf.dll
c:\program files (x86)\microsoft office\updates\apply\filesinuse\0631b4ea-e968-42f6-8c2b-aab5044241dd\txfo\root\vfs\programfilescommonx86\microsoft shared\office16
c:\program files (x86)\microsoft office\updates\apply\filesinuse\0631b4ea-e968-42f6-8c2b-aab5044241dd\txfo\root\vfs\programfilescommonx86\microsoft shared
c:\program files (x86)\microsoft office\updates\apply\filesinuse\0631b4ea-e968-42f6-8c2b-aab5044241dd\txfo\root\vfs\programfilescommonx86
c:\program files (x86)\microsoft office\updates\apply\filesinuse\0631b4ea-e968-42f6-8c2b-aab5044241dd\txfo\root\vfs
c:\program files (x86)\microsoft office\updates\apply\filesinuse\0631b4ea-e968-42f6-8c2b-aab5044241dd\txfo\root
C:\Program Files (x86)\Microsoft Office\Updates\Apply\FilesInUse\0631B4EA-E968-42F6-8C2B-AAB5044241DD\TxFO
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\vcruntime140_1.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\vcruntime140.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\streamserver.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\repoman.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\officeclicktorun.exe
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\msvcp140.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\msix.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\concrt140.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246\apiclient.dll
c:\program files\common files\microsoft shared\clicktorun\updates\16.0.14026.20246   
C:\Program Files\Common Files\Microsoft Shared\ClickToRun\Updates                    
C:\Program Files\BraveSoftware\Brave-Browser\Temp\scoped_dir21356_1472119359\old_chrome.exe
C:\Program Files\BraveSoftware\Brave-Browser\Temp\scoped_dir21356_1472119359         
C:\Program Files\BraveSoftware\Brave-Browser\Temp                                    



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9 minutes ago, biomembrain said:

I restarted my computer since then. I don't know what you mean... 

I was just pointing out according to the log submitted, there were pending file changes that required a restart.

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5 hours ago, Porthos said:

I was just pointing out according to the log submitted, there were pending file changes that required a restart.

I see. Thank you for your help, and input. I will enable Windows Defender, and Malwarebytes at the same time. You're smart man, you explain things really well, so I know you know what you are talking about. Thanks man :)

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