Yontoo adware

Also Known As: Yontoo Virus
Type: Adware
Damage level: High
Distribution: High
Damage Level

Yontoo adware - how to eliminate Buzzdock ads from Google and deceptive ads from YouTube?

What is Yontoo?

Yontoo is a company that develops browser add-ons and web applications. Their products include web apps such as Best Video Downloader (a web app that allows users to download videos from YouTube), PageRage (an app that allows users to change Facebook layouts), EasyInline (an app that enables the highlighting of text and provides options to search across various popular resource sites), and many others. While the idea of enhancing your Internet browsing experience with various browser add-ons and plug-ins is valid, Yontoo apps are ad-supported and thus employ some deceptive methods to display them. For example, after installing Best Video Downloader, visitors to YouTube will notice that the ads no longer originate from Google - the Yontoo app overrides them with its own.

It is important to note that downloading YouTube videos in this manner does not comply with copyright law, and furthermore, ads shown within YouTube after installing Best Video Downloader app can compromise the security of your PC and your privacy. Some of these ads will request users to complete online forms in order to claim a scam prize. Dubious ads such as these could also result in the installation of unwanted applications or even malware.

yontoo homepage

 best video downloader yontoo

When any Yontoo apps are installed on your Internet browsers, the displayed ads relating to searches no longer originate from Google. Yontoo overrides them with Buzzdock ads. Google is a reputable company, which spends a great deal of time and money to filter out ads that could harm your computer or invade your privacy. Note that it is not advisable to allow third party ads imposed in your browsers to replace original Google ads. If you have willingly installed Yontoo and are happy with the free services, then no action is necessary, however, be cautious when clicking ads displayed in YouTube and Google. If you are concerned about your computer's security and your own privacy, remove this app from your PC. Use the removal guide provided to help eliminate Yontoo from your computer.

Why you should remove Yontoo from your computer:

  • Yontoo overrides your Internet browsers and displays deceptive ads
  • Slower Internet browsing experience
  • Yontoo is detected as adware, a Trojan, or as an unwanted application by most legitimate antivirus vendors

Quick menu:

Yontoo removal:

Windows 7 users:


Click "Start" ("Windows Logo" in the bottom left corner of your desktop), choose "Control Panel". Locate and click "Programs and Features".

Windows XP users:


Click "Start", choose "Settings" and click "Control Panel". Locate and click "Add or Remove Programs".

WIndows 8 users:

Accessing Programs and Features (uninstall) in Windows 8

Right-click in the screen’s bottom-left corner, select Control Panel. In the opened window choose "Uninstall a Program".

yontoo uninstall

In the uninstall programs window, look for "Yontoo", select this entry and click " Uninstall" or "Remove"

After uninstalling Yontoo, scan your computer for any remaining unwanted components or possible malware infections. Recommended malware removal software.

Remover for Yontoo adware

If you need assistance removing Yontoo adware, give us a call 24/7:
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Yontoo removal from browsers:

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logoRemove Yontoo from Internet Explorer:

yontoo Internet Explorer

Click on the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer) select "Manage Add-ons". Look for Yontoo related entries (Yontoo Api, Yontoo) and disable them.

Optional method:

If you continue to have problems with removal of Yontoo, reset your Internet Explorer settings to default.

Windows XP users: Click "Start", click "Run", in the opened window type "inetcpl.cpl". In the opened window click on "Advanced" tab, then click Reset.

Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type "inetcpl.cpl" and click enter. In the opened window click on "Advanced" tab, then click Reset.

Windows 8 users: Open Internet Explorer and click on the "gear" icon. Select "Internet Options". In the opened windows select "Advanced" tab and click on the "Reset" button.

Google Chrome logoRemove Yontoo from Google Chrome:

yontoo Google Chrome

Click the Chrome menu iconGoogle Chrome options icon(at the top right corner of Google Chrome) select "Tools" and click on "Extensions".  Locate "Yontoo", select it and click on the trash can icon.

Optional method:

If you continue having problems with the removal of Yontoo add-on, you can reset your Google Chrome browser settings. Click the Chrome menu iconGoogle Chrome options icon(at the top right corner of Google Chrome) and select "Tools". In the opened menu select "Extensions" and click "Settings" (at the left corner of the screen). Scroll down to the bottom of the screen. Click on the "Show advanced settings…." link. After scrolling to the bottom of the screen click on the "Reset browser settings" button. In the opened window click on the "Reset" button.

Mozilla Firefox logoRemove Yontoo from FireFox:

yontoo mozilla firefox

Click on the Firefox menu firefox menu icon(at the top right corner of the main window) select "Add-ons". Click on "Extensions" and disable "Yontoo".

Optional method:

If you continue to have problems with removal of Yontoo, reset your Mozilla FireFox settings to default.

Open Mozilla Firefox, at the top right corner of the main window click on the Firefox menufirefox menu iconin the opened menu click on the "Open Help Menu" iconfirefox help menu then select "Troubleshooting Information", in the opened window click on "Reset Firefox" button.


Yontoo adware is an adware program that tracks user's Internet browsing and generates intrusive online advertisements. Most commonly adware or potentially unwanted applications infiltrate user's Internet browsers through free software downloads. Internet users should know that nowadays most of free software download websites are using download clients to manage their freeware download process, unfortunately some of the mentioned download clients don't properly disclose the fact that advertised browser plugins or toolbars will be installed together with the free program that users have decided to download.

Download clients and installers that are used to distribute adware commonly hide the “decline” button that can be used to opt-out of installing the advertised potentially unwanted applications. Some of the malicious free software download websites doesn't allow to download the chosen freeware if users decide to decline the installation of promoted software. Notice that the safest source for downloading free software is it's developers website. Screenshot of the free software download clients that are used in Yontoo adware distribution:

Free software download clients used in adware distribution

To avoid installation of Yontoo adware be very attentive when downloading and installing free software. If your download is managed by a download client be sure to decline installation of promoted browser plug-ins and toolbars:

Using decline button to avoid installation of adware

When installing the already downloaded free program choose “custom” or “advanced” installation options – this step will reveal all of the potentially unwanted applications that are being installed together with your chosen free program:

Using custom installation when downloading free software
If you are experiencing problems while trying to remove Yontoo adware from your computer, please ask for assistance in our malware removal forum.

If you have additional information on Yontoo adware or it's removal please share your knowledge in the comments section below.


#6 bllau 2013-01-05 22:23
Tomas Meskauskas |
i did all the 3 step & it works. my life is back to normal. thank you for posting the info. i appreciate.
#5 Nunya 2012-10-16 09:37
You need to make the comments box take longer comments...........
#4 Nunya 2012-10-16 09:36


IMO Firefox shouldn't allow add-ons to be installed without you knowing (and there's a setting for that that apparently doesn't work in the case of Yontoo)... note also that AVG didn't detect Yontoo, either.

I think there's a special place in Hell for these people that write spyware/adware, tight next to the telemarketers.....
#3 Nunya 2012-10-16 09:36
I noticed my computer doing stupid things and ran Spybot-SD, which found some of it.

I allowed Spybot to remove what it could but later I noticed that my right-click menu in Firefox had a lot of extra crap in it (it was huge) so I started looking and Yontoo was in the add-ons (I had noticed my browser had crashed and then when I restarted it there was a message about checking add-ons for compatibility)

Spybot claims that Facebook installs it without your knowledge and I think that must be right as I didn't have any problems until I visited Facebook a couple of days before. I had Flash Video Downloader Youtube Video Downloader for several weeks before this with no problem.

I removed Yontoo from the Firefox add-ons but also ran this uninstaller I got from the Firefox support page someone had posted and between uninstalling Yontoo from the add-ons and running the uninstaller my computer seems to be working normally now.
#2 anonymous 2012-10-13 04:20
after all, I manually deleted every file containing any reference to those three, i deleted all registry containing their names and short forms of names. after id did this, my sound system seemed to work better than before, probably because the malware was disabling surround sound for some reason.
since kaspersky can't find anything, that's all the proof i have of my success.

is it possible to REMOVE yontoo from firefox without uninstalling firefox its self? i have bestvideodownlo ader on firefox (OSX 10.6), but i can't see anything of yontoo in the addons. is it "hiding" or just incompatible with the mac version of the browsers?
#1 anonymous 2012-10-13 04:20
i've noticed yontoo in my firefox browser (on windows 7) a few days ago.
I probably caught it, as i installed Bestvideodownlo ader or some mp3 converter from Dvdvideosoft. since i always pay good attention to what can optionally be installed with the programs; I don't think it is any use unchecking the boxes, for it was installed without my knowledge.

the weirdest of all things is this:
my up-to-date kaspersky internet security 2013 never detected anything or warned me at all. about an hour before i noticed yontoo, i was redirected by conduit, when i tried to google. after all, i noticed there was yontoo, browser manager and conduit installed to my computer.
i should add, that of these three, only browser manager was listed in the control panel.
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