Jump to content

Extremely high disk activity for mbarwind.arw

Recommended Posts


Recently mbarwind.arw has started having extreme amount of disk activity and having severe impacts on system performances - to the point there it will cause stutters even watching a netflix movie on my system. 

It looks to be primarily writing data to the drive. 

I've tried the support tool to repair my installation thinking something might have corrupted during the last update, but it did no solve the problem. 

The only option i've found to stop this extreme system overload is to turn off the real time ransomware protection. 

Are there any steps i should take to solve this? I tried googling and found some threads on this forum, but nothing that presented a clear path of action. 

Included a screenshot of a typical scenario. 

Please excuse the screenshot being in danish as that is the native language here :) But im sure you know what windows resources looks like standard. malwarebytes-wtf.thumb.png.6a05277ac4cf1353ce956de0dc9e6d9c.png

Best regards


Link to post
Share on other sites

  • Staff

***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:

Malwarebytes Support Tool - Advanced Options

This feature is designed for the following reasons:

  • For use when you are on the forums and need to provide logs for assistance
  • For use when you don't need or want to create a ticket with Malwarebytes
  • For use when you want to perform local troubleshooting on your own

How to use the Advanced Options:

  1. Download Malwarebytes Support Tool
  2. Double-click mb-support-X.X.X.XXXX.exe to run the program
    • You may be prompted by User Account Control (UAC) to allow changes to be made to your computer. Click Yes to consent.
  3. Place a checkmark next to Accept License Agreement and click Next
  4. Navigate to the Advanced tab
  5. The Advanced menu page contains four categories:
    • Gather Logs: Collects troubleshooting information from the computer. As part of this process, Farbar Recovery Scan Tool (FRST) is run to perform a complete diagnosis. The information is saved to a file on the Desktop named mbst-grab-results.zip and can be added as an email attachment or uploaded to a forum post to assist with troubleshooting the issue at hand.
    • Clean: Performs an automated uninstallation of all Malwarebytes products installed to the computer and prompts to install the latest version of Malwarebytes for Windows afterwards. The Premium license key is backed up and reinstated. All user configurations and other data are removed. This process requires a reboot.
    •  Repair System: Includes various system-related repairs in case a Windows service is not functioning correctly that Malwarebytes for Windows is dependent on. It is not recommended to use any Repair System options unless instructed by a Malwarebytes Support agent.
    • Anonymously help the community by providing usage and threat statistics: Unchecking this option will prevent Malwarebytes Support Tool from sending anonymous telemetry data on usage of the program.
  6. To provide logs for review click the Gather Logs button
  7. Upon completion, click OK
  8. A file named mbst-grab-results.zip will be saved to your Desktop
  9. Please attach the file in your next reply.
  10. To uninstall all Malwarebytes Products, click the Clean button.
  11. Click the Yes button to proceed. 
  12. Save all your work and click OK when you are ready to reboot.
  13. After the reboot, you will have the option to re-install the latest version of Malwarebytes for Windows.
  14. Select Yes to install Malwarebytes.
  15. Malwarebytes for Windows will open once the installation completes successfully.













If you are having licensing issues, please do the following: 


For any of these issues:

  • Renewals
  • Refunds (including double billing)
  • Cancellations
  • Update Billing Info
  • Multiple Transactions
  • Consumer Purchases
  • Transaction Receipt

Please contact our support team at https://support.malwarebytes.com/hc/en-us/requests/new to get help

If you need help looking up your license details, please head here: Find my premium license key



Thanks in advance for your patience.

-The Malwarebytes Forum Team

Link to post
Share on other sites

8 minutes ago, Treached said:

Recently mbarwind.arw has started having extreme amount of disk activity and having severe impacts on system performances - to the point there it will cause stutters even watching a netflix movie on my system.

We need to get information from this machine in order to have the proper detail to help you forward.
 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 Malwarebytes Support Tool
    Once the file is downloaded, open your Downloads folder/location of the downloaded file
    Double-click mb-support xxx.xx.exe to run the report
        You may be prompted by User Account Control (UAC) to allow changes to be made to your computer. Click Yes to consent.
    Place a checkmark next to Accept License Agreement and click Next
    You will be presented with a page stating, "Get Started!"

    Do NOT use the button “Start repair” !
    Click the Advanced tab on the left column
    Click the Gather Logs button
    A progress bar will appear and the program will proceed with getting logs from your computer
    Upon completion, click a file named mbst-grab-results.zip will be saved to your Desktop. Click OK
    Please attach the ZIP file in your next reply

Link to post
Share on other sites


It looks like some update files for Malwarebytes are awaiting a reboot to be replaced.  Please restart your system and see how it runs.

If the problem continues, please do the following:

  1. Run the Malwarebytes Support Tool
  2. Accept the EULA and click Advanced tab on the left (not Start Repair)
  3. Click the Clean button, and allow it to restart your system and then reinstall Malwarebytes, either by allowing the tool to do so when it offers to on restart, or by downloading and installing the latest version from here

Once it is installed again, be sure to check for updates to ensure the latest patch is installed, then restart the system again after the update completes and see how the system runs.

Please let us know how it goes.


Link to post
Share on other sites


We are actively working on improvements to Ransomware Protection performance.

If you're still experiencing an issue after rebooting the machine, could you provide more detail on exactly which type of activities triggers the performance degradation? You mentioned watching a Netflix film in your original post. How are you watching Netflix (browser, Netflix application, etc)? Does the performance issue only occur with this particular activity or other activities as well?

Link to post
Share on other sites

Right, so i've restarted a few times since the initial post and tried to pay attention to when the activity is extremely high, and here is my "report" on it. 

I normally run Black Desert Online in the background and have it minimized to tray. Its still using massive amount of ram, but that's not a problem as im running 32gb. 

I also actively often run World of warcraft, and it's when both of these applications are active at the same time that the extreme activity tends to ramp up. 

Add on top of that, the occasional youtube or netflix video playing in the chrome browser. The issue gets intense. Its almost like Malware Bytes becomes paranoid when there is too much stuff running that consumes resources on the machine. 

Link to post
Share on other sites

Ransomware Protection in Malwarebytes monitors all disk activity (reads, writes, deletes etc.) to look for ransomware activity, so any time there is higher disk access/usage by one or more applications, the amount of activity by Malwarebytes' Ransomware Protection component will ramp up as well as it monitors all the activity.  It's not a matter of 'paranoia', just a matter of doing its job.  In other words, you don't want Malwarebytes to back off and let things go if the system gets bogged down only to allow an infection to take hold and encrypt your data because Malwarebytes didn't want to hit your system resources too hard.

Hopefully the Developers will be able to optimize performance of Ransomware Protection further to reduce its impact on system performance/resources, however the more activity there is at any given time, the more activity that has to be analyzed (and the more work/resources/CPU etc.) so the impact on the system by the protection will likewise increase (it's the same for monitoring new process creation/execution in memory for other protection components like the primary Malware Protection component, or the Web Protection component ramping up when there is a large volume of network activity).

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
Back to top
  • Create New...

Important Information

This site uses cookies - We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.