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Disk usage 100%

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I gave in to temptation and installed the latest version of MWB 3- and ended up with an unusable computer for most of the day. Disk usage was persistently 100% and it was only with great difficulty that I was able to run the cleaner, which left registry entries which I was unable to delete.

A whole day with no productive work, and I am left with great anxiety about trying again.

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Thank you for your replies and advice. I have been following the forum for some months now, and delayed moving from v 2. I had hoped that v3.2 might have eliminated the many problems folk have reported.

I forgot to mention that am running Windows 10 (latest version) on a fairly new high spec PC, and did wonder whether there might be conflict with other programs, despite the claim that MWB plays nicely with other security software. I have been trialling e.g. CryptoPrevent and WinPatrol WAR.

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32 minutes ago, archival said:

and did wonder whether there might be conflict with other programs, despite the claim that MWB plays nicely with other security software.

There can be conflicts but can usually be worked around. But we can't tell for sure with out some Diag logs.

·  Create and obtain Farbar Recovery Scan Tool (FRST) logs

  1. Download FRST and save it to your desktop
    Note: You need to run the version compatible with your system. You can check here if you're not sure if your computer is 32-bit or 64-bit
  2. Double-click to run FRST and when the tool opens click "Yes" to the disclaimer
  3. Press the "Scan" button
  4. This will product two files in the same location (directory) as FRST: FRST.txt and Addition.txt
    • Leave the log files in the current location, they will be automatically collected by mb-check once you complete the next set of instructions

·  Create and obtain an mb-check log

  1. Download MB-Check and save to your desktop
  2. Double-click to run MB-Check and within a few second the command window will open, press "Enter" to accept the EULA then click "OK" 
  3. This will produce one log file on your desktop: mb-check-results.zip
    • This file will include the FRST logs generated from the previous set of instructions
    • Attach this file to your forum post by clicking on the "Drag files here to attach, or choose files..." or simply drag the file to the attachment area
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The group policies look to be an old "fix" for protecting from Ransomware and viruses. It's semi-useful, but a lot of times can cause issues with downloaded files (for example, last time I checked, those group policies prevent you from installing an HP printer). However we haven't seen any indication of them causing problems with MB3

As for the issue here, are you sure it's Malwarebytes causing the 100% disk usage? Does this only happen during a scan, or does it happen other times as well? From what I can see, Malwarebytes was only partially removed as well. The first step would best be suited to getting a full clean system and going from there. Can you please download and run mb-clean from https://downloads.malwarebytes.com/file/mb_clean and then run mb-check again and upload the zip file? Be sure not to re-install if mb-clean prompts you, as I want to make sure everything gets removed first.

As for the ERUNT.exe crash, that looks to be a registry backup utility that crashed, not MB3

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  • Root Admin
On ‎9‎/‎2‎/‎2017 at 5:04 AM, lock said:

Why would you try "again"???

See this:


A bit of history






Decide for yourself


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Thank you dcollins.

The 100% disk use began almost as soon as I installed MWB,  without even doing a scan, and once MWB was removed (even though it appears not completely) , disk use has normalised.

I will follow your suggestion when I have a break from work.

I don't have a registry backup utility.

Thank you for persisting with my problem.

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