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Slow Files Delete

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Since removing Avast Security and moving to Malwarebytes I've found file deletions taking too long.

Sometimes it might only be 10 to 20 files but it's slow to delete, Windows message says "Preparing files for deletion..."

I discovered disabling the Ransomeware Protection option solves the problem.

Any chance of a permanent fix?

I'm using version

Windows 21H1 B1288

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19 minutes ago, r22flyer said:

Type of files and app type make no difference

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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ok, I did as suggested above.

The results text file is attached.

Although MB re-installed ok, and seems to work fine, and a system scan was clean, the slow delete files problem still exists.

If I disable the Ransomware module, then delete multiple files works just fine.

Interestingly, I encountered the same issue on my partner's laptop, slow delete file.

In my view there's some fundamental conflict in the Ransomware module.


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  • Root Admin

Please go to Control Panel, Programs, Programs and Features and uninstall the following

CCleaner (computer experts no longer recommend the use of this program)

After the removal please restart the computer and run the following fix



Please download the attached fixlist.txt file and save it to the Desktop or location where you ran FRST from.
NOTE. It's important that both files, FRST or FRST64, and fixlist.txt are in the same location or the fix will not work.

Please make sure you disable any real-time antivirus or security software before running this script. Once completed, make sure you re-enable it.

NOTICE: This script was written specifically for this user, for use on this particular machine. Running this on another machine may cause damage to your operating system that cannot be undone.

Run FRST or FRST64 and press the Fix button just once and wait.
If the tool needs a restart please make sure you let the system restart normally and let the tool complete its run after restart.
The tool will make a log on the Desktop (Fixlog.txt) or wherever you ran FRST from. Please attach or post it to your next reply.

Note: If the tool warned you about an outdated version please download and run the updated version.

NOTE-1:  This fix will run a scan to check that all Microsoft operating system files are valid and not corrupt and attempt to correct any invalid files. It will also run a disk check on the restart to ensure disk integrity. Depending on the speed of your computer this fix may take 30 minutes or more.

NOTE-2: As part of this fix all temporary files will be removed. If you have any open web pages that have not been bookmarked please make sure you bookmark them now as all open applications will be automatically closed. Also, make sure you know the passwords for all websites as cookies will also be removed. The use of an external password manager is highly recommended instead of using your browser to store passwords.

NOTE-3: As part of this fix it will also reset the network to default settings including the firewall. If you have custom firewall rules you need to save please export or save them first before running this fix.

The following directories are emptied:

  • Windows Temp
  • Users Temp folders
  • Edge, IE, FF, Chrome, and Opera caches, HTML5 storages, Cookies and History
  • Recently opened files cache
  • Flash Player cache
  • Java cache
  • Steam HTML cache
  • Explorer thumbnail and icon cache
  • BITS transfer queue (qmgr*.dat files)
  • Recycle Bin

Important: items are permanently deleted. They are not moved to quarantine. If you have any questions or concerns please ask before running this fix.

The system will be rebooted after the fix has run.




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I do think the script is a bit of a sledgehammer to crack a nut approach and not directly addressing that the issue is caused by the Ransomware module of Malwarebytes.

Note also that although the logs info shows Avast in use, I can assure that it is NOT installed on the system.

There's nothing wrong with Windows Update, working well in fact, so I don't see why that needs resetting.

Nor the network settings, Steam cache, Cookies, because 4 machines show this behaviour and all those items will be different on each machine, as will be CPUs and drives.

Windows Temp is regularly emptied and SFC and DISM commands show a clean system.

Please advise what you suspect might be wrong and not just recommend a thorough machine cleanup.

Happy to target specifics manually.


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  • Root Admin

I don't know specifically but cleaning hundreds of machines has proven out over time that it fixes at least about 90% of them. The other 10% is what takes a lot more time to track down the real cause.

You can open a Support Ticket and work directly with a Support Agent with access to our QA Team if you'd rather. They might be able to track down and spot a specific issue.


Thank you


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