Malwarebytes for Windows detected a Potentially Unwanted Modification

Document created by parche Employee on May 10, 2017Last modified by jgolomb on Nov 4, 2019
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Malwarebytes for Windows detects Potentially Unwanted Modifications (PUMs) to help prevent software from making unauthorized changes to the Windows settings on your computer.  PUMs are not always harmful, but they can change the way your computer behaves.  You can research more about PUMs on our blog, Malwarebytes Labs.


PUMs can prevent you from doing common tasks such as:

  • opening your Start Menu
  • performing updates
  • viewing File Explorer
  • using Task Manager


When PUM is detected on your computer, Malwarebytes for Windows does not know whether or not it was authorized.  Optimization software, malware, and Potentially Unwanted Programs (PUPs) are known to make these types of changes, hence they are regarded as potentially unwanted.


Ignore a Potentially Unwanted Modification

To have Malwarebytes for Windows ignore a PUM, you must add the PUM as an exclusion.


  1. Open Malwarebytes for Windows.

  2. Click Settings, then click the Protection tab.
    Image of Protection tab under the Settings in Malwarebytes Premium.

  3. Scroll down to the bottom.

  4. Turn off Automatically quarantine detected malware.
    Turning this setting off prevents Malwarebytes for Windows from quarantining the PUM automatically.

  5. Go to the Dashboard, then click Scan Now.
    Image of Dashboard of Malwarebytes Premium.

  6. When the Threat Scan Results appear, uncheck the box next to the detected PUM you want to keep.
    Image of Threat Scan Results on Malwarebytes Premium.

  7.  Click Next.

  8.  On the Remaining Items window, click Ignore Always to add the exclude the detected PUM(s).
    Image of Ignore Always button in the Threat Scan Results of Malwarebytes Premium.

  9. Turn on Automatically quarantine detected malware.
    To find this setting, click Settings > Protection.


When a PUM is excluded, Malwarebytes for Windows does not detect the PUM during scans or Real-Time Protection.  To add, edit, or delete exclusions, refer to the article Exclude detections in Malwarebytes on Windows devices.


See also