Remove PUP.Optional.CrossRider virus (Removal Guide)

PUP.Optional.CrossRider is a heuristic detection used by Malwarebytes Anti-Malware to indicate and detect a Potentially Unwanted Program.

A potentially unwanted application is a program that contains adware, installs toolbars or has other unclear objectives.
PUP.Optional.CrossRider got on your computer after you have installed a freeware software (video recording/streaming, download-managers or PDF creators) that had bundled into their installation this browser hijacker. This Potentially Unwanted Program is also bundled within the custom installer on many download sites (examples: CNET, Brothersoft or Softonic), so if you have downloaded a software from these websites, chances are that PUP.Optional.CrossRider was installed during the software setup process.

PUP.Optional.CrossRider is an adware program, that displays pop-up ads and advertisements on web pages that you visit. These advertisements will be shown as boxes containing various coupons that are available, as underlined keywords, pop-up ads or advertising banners.
These ads are aimed to promote the installation of additional questionable content including web browser toolbars, optimization utilities and other products, all so the PUP.Optional.CrossRider publisher can generate pay-per-click revenue.
When infected with PUP.Optional.CrossRider the common symptoms include:

  • Advertising banners are injected with the web pages that you are visiting.
  • Random web page text is turned into hyperlinks.
  • Browser popups appear which recommend fake updates or other software.
  • Other unwanted adware programs might get installed without the user’s knowledge.

You should always pay attention when installing software because often, a software installer includes optional installs, such as this PUP.Optional.CrossRider browser hijacker. Be very careful what you agree to install.
Always opt for the custom installation and deselect anything that is not familiar, especially optional software that you never wanted to download and install in the first place. It goes without saying that you should not install software that you don’t trust.

How to remove PUP.Optional.CrossRider (Virus Removal Guide)

This page is a comprehensive guide, which will remove PUP.Optional.CrossRider from Internet Explorer, Firefox and Google Chrome.
Please perform all the steps in the correct order. If you have any questions or doubt at any point, STOP and ask for our assistance.
STEP 1: Remove PUP.Optional.CrossRider adware with AdwCleaner
STEP 2: Remove PUP.Optional.CrossRider browser hijacker with Junkware Removal Tool
STEP 3: Remove PUP.Optional.CrossRider virus with Malwarebytes Anti-Malware Free
STEP 4: Double-check for the PUP.Optional.CrossRider infection with HitmanPro

STEP 1: Remove PUP.Optional.CrossRider adware with AdwCleaner

The AdwCleaner utility will scan your computer for the PUP.Optional.CrossRider adware and other unwanted browser extensions, that may have been installed on your computer without your knowledge.

  1. You can download AdwCleaner from the below link.
    ADWCLEANER DOWNLOAD LINK (This link will open a new web page from where you can download “AdwCleaner”)
  2. Before starting AdwCleaner, close your web browser, then double-click on the AdwCleaner icon.
    Start AdwCleaner
    Picture of User Account Control If Windows prompts you as to whether or not you wish to run AdwCleaner, please allow it to run.
  3. When the AdwCleaner program will open, click on the “Scan” button as shown below.
    AdwCleaner Scan button
    AdwCleaner will now start to search for adware and other malicious files that may be installed on your computer.
  4. To remove the malicious files that were detected in the previous step, please click on the “Cleaning” button.
    Remove PUP.Optional.CrossRider adware with AdwCleaner
  5. AdwCleaner will prompt you to save any open files or documents, as the program will need to reboot the computer to complete the cleaning process. Please do so, and then click on the “OK” button.
    AdwCleaner removing adware
    When your computer reboots and you are logged in, AdwCleaner will automatically open a log file that contains the files, registry keys, and programs that were removed from your computer.

STEP 2: Remove PUP.Optional.CrossRider browser hijack with Junkware Removal Tool

Junkware Removal Tool is a powerful utility from Malwarebytes, which will remove browser hijackers from Internet Explorer, Microsoft Edge, Firefox and Google Chrome.

  1. You can download Junkware Removal Tool from the below link:
    JUNKWARE REMOVAL TOOL DOWNLOAD LINK (This link will automatically download the Junkware Removal Tool utility on your computer)
  2. When Junkware Removal Tool has finished downloading, please double-click on the JRT icon as seen below.
    Run a scan with Junkware Removal Tool
    Picture of User Account Control If Windows prompts you as to whether or not you wish to run Junkware Removal Tool, please allow it to run.
  3. Junkware Removal Tool will now start (as seen in the below image), and at the Command Prompt, you’ll need to press any key to perform a system scan.
    Junkware Removal Tool start scan
    The program will now start to search for known adware, PUPs, and junkware programs that may be installed on your computer. This process may take upwards to 10 minutes while it creates a registry backup and checks your startups, installed modules, processes, services, files, folders, and the Windows Registry.
    Junkware Removal Tool scan
  4. When the Junkware Removal Tool cleaning process will be completed, this utility will display a log with the malicious files and registry keys that were removed from your computer.
    Junkware Removal Tool Report

STEP 3: Remove PUP.Optional.CrossRider virus with Malwarebytes Anti-Malware Free

Malwarebytes Anti-Malware Free uses industry-leading technology to detect and remove all traces of malware, including worms, Trojans, rootkits, rogues, dialers, spyware, and more.
It is important to note that Malwarebytes Anti-Malware works well and should run alongside antivirus software without conflicts.

  1. You can download download Malwarebytes Anti-Malware from the below link.
    MALWAREBYTES ANTI-MALWARE DOWNLOAD LINK (This link will open a new web page from where you can download “Malwarebytes Anti-Malware Free”)
  2. Once downloaded, close all programs, then double-click on the icon on your desktop named “mbam-setup” to start the installation of Malwarebytes Anti-Malware.
    Start Malwarebytes Anti-Malware setup
    Picture of User Account Control You may be presented with a User Account Control dialog asking you if you want to run this file. If this happens, you should click “Yes” to continue with the installation.
  3. When the installation begins, you will see the Malwarebytes Anti-Malware Setup Wizard which will guide you through the installation process.
    Malwarebytes Anti-Malware Installer
    To install Malwarebytes Anti-Malware on your machine, keep following the prompts by clicking the “Next” button.
    Malwarebytes Anti-Malware final screen
  4. Once installed, Malwarebytes Anti-Malware will automatically start and you will see a message stating that you should update the program, and that a scan has never been run on your system. To start a system scan you can click on the “Scan Now” button.
    Malwarebytes Anti-Malware Scan Now
  5. Malwarebytes Anti-Malware will now start scanning your computer for malware. When Malwarebytes Anti-Malware is scanning it will look like the image below.
    Malwarebytes Anti-Malware Scanning for Malware
  6. When the scan has completed, you will now be presented with a screen showing you the malware infections that Malwarebytes Anti-Malware has detected. To remove the malicious programs that Malwarebytes Anti-malware has found, click on the “Remove Selected” button.
    Remove the malware that Malwarebytes Anti-Malware has detected
    Please note that the infections found may be different than what is shown in the image.
  7. Malwarebytes Anti-Malware will now quarantine all the malicious files and registry keys that it has found. When removing the files, Malwarebytes Anti-Malware may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot your computer, please allow it to do so.
    Malwarebytes Anti-Malware asking to restart PC
    After your computer will restart, you should open Malwarebytes Anti-Malware and perform another “Threat Scan” scan to verify that there are no remaining threats

STEP 4: Double-check for the PUP.Optional.CrossRider malware with HitmanPro

HitmanPro is a second opinion scanner, designed to rescue your computer from malware (viruses, trojans, rootkits, etc.) that have infected your computer despite all the security measures you have taken (such as anti virus software, firewalls, etc.). HitmanPro is designed to work alongside existing security programs without any conflicts. It scans the computer quickly (less than 5 minutes) and does not slow down the computer.

  1. You can download HitmanPro from the below link:
    HITMANPRO DOWNLOAD LINK (This link will open a new web page from where you can download “HitmanPro”)
  2. Double-click on the file named “HitmanPro.exe” (for 32-bit versions of Windows) or “HitmanPro_x64.exe” (for 64-bit versions of Windows). When the program starts you will be presented with the start screen as shown below.
    HitmanPro Installer
    Click on the “Next” button, to install HitmanPro on your computer.
    itmanPro while installing on PC
  3. HitmanPro will now begin to scan your computer for malware.
    HitmanPro scanning
  4. When it has finished it will display a list of all the malware that the program found as shown in the image below. Click on the “Next” button, to remove the malicious files.
    HitmanPro detected malware
  5. Click on the “Activate free license” button to begin the free 30 days trial, and remove all the malicious files from your computer.
    Remove malware with HitmanPro

Your computer should now be free of the PUP.Optional.CrossRider adware infection.
If you are still experiencing problems while trying to remove PUP.Optional.CrossRider from your machine, please do one of the following:


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I am the creator and owner of MalwareTips. I am passionate about computer security and technology. I have an experience of 9 years working as a security researcher.

My area of expertise includes Malware Analysis and Computer Forensics. I'm active in the various online anti-malware communities where I do researches for new malware threats as they are released.


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  • Luke

    Thanks! Man these things are tough mbam found 108 of this on my mum’s PC, and adwcleaner and hitmanpro killed off the rest of the adware! Thanks!