PUP.Optional.Yontoo Removal [Explained]

What is PUP.Optional.Yontoo

PUP.Optional.Yontoo is a detection name used by some anti-virus programs to detect adware that belongs to a certain adware family. If your anti-virus is detecting it on your computer, you’re likely constantly bombarded with advertisements when browsing. The constant ads and random redirects make adware a very noticeable infection, even without anti-virus software. While many users may refer to adware as a virus, the classification is not technically correct. Adware is relatively harmless by itself since it mainly focuses on showing ads. Said ads, on the other hand, are a different story. Adware generated ads could expose you to potentially dangerous content, including various scams and malware. So if your anti-virus software is detecting it, allow it to delete PUP.Optional.Yontoo.


If you notice adware present on your computer, you’re likely confused about how adware installed in the first place. Adware, as well as other smaller infections like browser hijackers and potentially unwanted programs (PUPs), use software bundling to spread. What likely happened is adware was attached to a free program you installed and you did not notice. To prevent it from installing, you’d need to have deselected it during installation. Because it went unnoticed, the adware was able to install.

How to prevent adware installation in the future

As we said above, you likely infected your computer with adware when installing freeware. Most free programs come with additional offers attached, usually adware, browser hijackers and PUPs. The offers are optional but they are set to install by default, so to prevent their installation, you’d need to deselect them. The offers are purposely hidden, which results in users not noticing them and accidentally allowing them to install. Fortunately, it’s not difficult to prevent these installation, as long as you pay attention to how you install programs.

During installations, opt for Advanced (Custom) settings when given the option. Default settings will conceal all offers and they’ll be able to install alongside. In Advanced, however, they’ll be made visible, and you’ll be able to deselect them. All you need to do is uncheck the boxes of those offers. Once you have deselected all offers, you can continue installing the program.

Keep in mind that most free programs come with additional offers. Your computer will be full of junk programs if you allow these offers to install freely.

What does adware do?

The main purpose of adware is to expose you to advertisement content in order to generate revenue. This means banners, pop-ups and most annoyingly, redirects. The adware can attach itself to all popular browsers, including Mozilla Firefox and Google Chrome. Once it hijacks the browser, you’ll be bombarded with ads all the time.

We mentioned that adware itself isn’t particularly dangerous. However, the ads that it generates may actually be harmful. Adware is known to show ads promoting fraudulent programs, fake updates, as well as those “You have won” and tech-support scams. Thus, interaction with ads while adware is installed should be avoided.

You may be shown a fake virus alert claiming that your computer is infected with a serious virus that is stealing your information. The fake notification will either ask you to install the offered program, or call the provided number for supposed tech-support. Since these virus alerts are always fake, you don’t need to install anything or call anyone. If you did download whatever is offered in those ads, you’d end up with some kind of infection. And if you were to call, you’d be dealing with professional scammers aiming to get you to pay for useless services. Legitimate virus alerts will only come from your anti-virus program, not your browser.

If you haven’t already been aware of this, all those “You have won” ads will always be fake. Every single one of them. Those scams offer tech prizes, such as iPhones, Samsung smartphones, tablets, computers, etc., which can be quite tempting for more gullible users. However, these ads are merely scams that want your personal information.

PUP.Optional.Yontoo removal

Since PUP.Optional.Yontoo is a detection name, your anti-virus is likely already detecting it. Allow it to remove PUP.Optional.Yontoo. Once the adware is gone, you will no longer see an abundance of ads.


You can find more information about WiperSoft on its official website, and find its uninstallation instructions here. Before installing, please familiarize yourself with WiperSoft EULA and Privacy Policy. WiperSoft will detect malware for free and gives Free trail to remove it.

  • WiperSoft

    WiperSoft is an anti-virus program with real-time threat detection and malware removal features. It detects all types of computer threats, from adware and browser hijackers to trojans, and easily removes them.

  • Combo Cleaner

    ComboCleaner is an anti-virus and system optimization program for Mac computers. The program will keep your Mac secure from different types of malware, as well as clean it to keep it running smoothly.

  • MalwareBytes

    Malwarebytes is a powerful anti-virus program that detects and removes all types of malware, as well as less serious threats like adware and browser hijackers. It has both free and paid versions.


Automatic PUP.Optional.Yontoo removal

It’s easiest to uninstall PUP.Optional.Yontoo from both Macs and Windows devices via security program such as anti-spyware. Such programs are designed to remove these infections and PUP.Optional.Yontoo will not be an issue. Simply download the software, perform a scan, and uninstall PUP.Optional.Yontoo. However, it’s also possible to uninstall PUP.Optional.Yontoo manually, and you will find instructions below.

Remove PUP.Optional.Yontoo from Windows manually

Windows XP

  1. Push the windows key on the keyboard to open Start menu (or simply click Start), then click Settings and finally Control Panel.
  2. Click on Add or Remove Programs.
  3. Uninstall PUP.Optional.Yontoo.
  4. Look through all installed programs for anything else that’s suspicious and delete them.

Windows 7

  1. Open Control Panel by clicking Start and then Control Panel.
  2. Pick Programs and Features and then Uninstall a program.
  3. Remove PUP.Optional.Yontoo.
  4. Look through all applications installed on your computer for anything else that’s questionable and get rid of them.

Windows 8/10

  1. Right-click on Start – Programs and Features.
  2. Uninstall PUP.Optional.Yontoo.
  3. Look through all applications installed on your system for other suspicious programs and get rid of them.

How to manually remove PUP.Optional.Yontoo from Mac OS

You shouldn’t have any issues with removing PUP.Optional.Yontoo from your Mac device. But removing the application won’t be sufficient, you’ll also need to remove any leftover files.

  1. Finder – Applications.
  2. Put PUP.Optional.Yontoo into the trash.
  3. If there are any other programs you don’t recognise, remove them as well.
  4. Open Go to Folder from the Go menu in your menu bar.
  5. Type /Library/LaunchAgents, and drag to the trash any questionable and recently-added files.
  6. Go back to Go to Folder, and put in /Library/Application Support. Search for any recently-added or otherwise suspicious files and trash them.
  7. Return to Go to Folder, and put in ~/Library/LaunchAgents. Drag all questionable files to the trash.
  8. Open Go to Folder again, and put in /Library/LaunchDaemons. If Any recently-added files appear questionable, trash them.
  9. Do not forget to empty the trash which you can do by right-clicking on the trash icon and clicking Empty Trash.

PUP.Optional.Yontoo removal from your Internet browser

Delete PUP.Optional.Yontoo from Internet Explorer

  1. Open Internet Explorer.
  2. Access the menu (the gear icon top-right corner), and press Manage Add-ons.
  3. Click Remove on PUP.Optional.Yontoo and all unknown extensions.
  4. Click the gear icon (top-right corner), and pick Internet Options.
  5. If you open the General tab, you will be able to alter your homepage page.
  6. Open Manage Add-ons by pressing on the browser menu (the gear icon) and selecting Manage Add-ons.
  7. Press Search Providers (from the menu on the left), change the search engine to your choice after you delete the one PUP.Optional.Yontoo set as the default.

If PUP.Optional.Yontoo is still giving you problems, your browser’s settings may have to be reset to default.

  1. If your computer is running Windows XP, Start – Run, type inetcpl.cpl, proceed to the Advanced tab and press Reset.
  2. If you are using Windows Vista/7, click the windows logo, type inetcpl.cpl in the search box and click Enter. Access the Advanced tab and press Reset.
  3. For Windows 8/10 users, open Internet Explorer, press on the gear icon, choose Internet Options, access the Advanced tab and press Reset. Confirm the reset by clicking Reset again.

PUP.Optional.Yontoo deletion from Google Chrome

  1. Launch Google Chrome.
  2. Menu (the three dots right-corner of the screen) – More tools – Extensions.
  3. Locate and delete PUP.Optional.Yontoo, as well as any other extension you do not recognise.
  4. Access Settings through the menu (the three dots top right-corner).
  5. In the On startup section, set your preferred homepage instead of the one set by PUP.Optional.Yontoo.
  6. Open the Search engine section from the menu on the left, then Manage search engines, change your search engine.

Your browser’s settings will have to be reset if PUP.Optional.Yontoo is still there.

  1. Launch Google Chrome, access menu (the three dots), press Settings.
  2. Go down, click Advanced and scroll down to the Reset section.
  3. Click Reset and then affirm your choice by clicking on Reset again.

PUP.Optional.Yontoo removal from Mozilla Firefox

  1. Open Mozilla Firefox.
  2. Access the menu (the three bars on the top-right corner), and then press on Add-ons.
  3. Access Extensions, find and remove PUP.Optional.Yontoo, and any other unfamiliar extension.
  4. Access menu again, and press Preferences.
  5. In the Home tab, delete the homepage set by PUP.Optional.Yontoo and set your preferred one.
  6. Access the Search tab from the menu on the left, delete the search engine PUP.Optional.Yontoo set for you and change it to something you prefer.

It may be necessary to restore browser’s settings to default if you are still having problems with PUP.Optional.Yontoo.

  1. Menu (the three bars) – Help – Troubleshoot information.
  2. Press Refresh Firefox.
  3. Press Refresh Firefox again.

How to uninstall PUP.Optional.Yontoo from Safari

  1. Open Safari.
  2. Safari (from the menu bar at the top) – Preferences.
  3. Open the Extensions tab, find PUP.Optional.Yontoo and any other unknown extension, and remove them.
  4. In the General tab, delete the homepage set by PUP.Optional.Yontoo and choose your preferred one.
  5. Access the Search tab, delete the search engine set by PUP.Optional.Yontoo and set your preferred one.

Your browser’s settings will have to be restored if PUP.Optional.Yontoo is still present.

  1. Open Safari, press on Safari (on the menu bar at the top), and press Clear History.
  2. Press Safari (from the top menu) again – Preferences – Advanced tab.
  3. Check the Show Develop menu in menu bar box.
  4. The Develop menu will be visible at the top, press that and then click on Empty Caches.

PUP.Optional.Yontoo removal from Microsoft Edge

  1. Launch Microsoft Edge.
  2. Menu (the three dots at the top-right corner) – Extensions.
  3. Look for PUP.Optional.Yontoo and any other unknown extension, and delete them.
  4. Open Settings through the menu (the three dots).
  5. You can change your homepage in On Startup.
  6. Proceed to Privacy and services tab, modify your search engine.

If that did not solve your problems, it’ll be necessary to reset your browser’s settings to default.

  1. Launch Microsoft Edge, open menu (the three dots), select Settings, open the Reset settings tab.
  2. Select Restore settings to their default values. Reset.

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