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Short bio

PUP.Optional.PCCleaner is Malwarebytes’ detection name for a potentially unwanted program called PC Cleaner targetting Windows systems.


Users that have PC Cleaner installed may have a false sense of security which exposes them to more serious threats.

Type and source of infection

PUP.Optional.PCCleaner is a so-called system optimizer. These so-called “system optimizers” use exaggerated scan results or sometimes even intentional false positives to convince users that their systems have problems. Then they try to sell you their software, claiming it will remove these problems. PUP.Optional.PCCleaner is usually installed by users themselves under false pretences.


Malwarebytes blocks the installer for PC Cleaner to give users an opportunity for an informed choice.

Malwarebytes blocks PUP.Optional.PCCleaner

Malwarebytes blocks PUP.Optional.PCCleaner


Malwarebytes can detect and remove PUP.Optional.PCCleaner without further user interaction.

  1. Please download Malwarebytes to your desktop.
  2. Double-click MBSetup.exe and follow the prompts to install the program.
  3. When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
  4. Click on the Get started button.
  5. Click Scan to start a Threat Scan.
  6. Click Quarantine to remove the found threats.
  7. Reboot the system if prompted to complete the removal process.

Add an exclusion

Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.

  • Open Malwarebytes for Windows.
  • Click the Detection History
  • Click the Allow List
  • To add an item to the Allow List, click Add.
  • Select the exclusion type Allow a file or folder and use the Select a folder button to select the main folder for the software that you wish to keep.
  • Repeat this for any secondary files or folder(s) that belong to the software.

If you want to allow the program to connect to the Internet, for example to fetch updates, also add an exclusion of the type Allow an application to connect to the internet and use the Browse button to select the file you wish to grant access.