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How to Remove Youndoo “Virus” (Chrome Uninstall) (March 2019 Update)

This page aims to help you how to remove Youndoo “Virus”. These Youndoo “Virus” removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

Dear reader,

You may have stopped on our page because recently you have been irritated by some undesired ads that just won’t stop popping up on your monitor. 
Maybe you are already aware of the origin of your annoyance – the Youndoo “Virus”. N
evertheless, if you haven’t researched much, below in our article you will find detailed information about the nature of this program, as well as an explanation of how exactly you have caught it and, of course, removal instructions and some prevention tips.

The Youndoo "virus" in action

The Youndoo “virus” in action

What exactly causes the appearance of so many ads on your screen?
Nowadays the marketing industry is one of the most profitable, but also most aggressive ones. As the Internet has become the preferred source of information, the advertising means have also changed. Developers have created a special type of software designed to help that industry spread as many ads as possible – browser hijacker. 
And, yes, it is what makes such an incredible number of ads appear on your screen every single day when you are surfing the web.

Can browser hijacker damage your system?

Well, generally, browser hijacker is completely UNABLE to cause any damage to your computer on its own. Neither is it able to encode data as some viruses like Ransomware do, nor is it likely to steal private information or destroy any system files as other malware usually does. The only rather disturbing thing it is able to do is to keep track of your online searches and match the generated ads to your personal tastes. Also, sometimes it is possible that this info about your browsing preferences could be sold to 3rd parties who are interested in selling products and services to you.

There is also the small chance that some ads shown by the browser hijacker could be able to redirect you to potentially dangerous websites that may contain malware like Trojans, Ransomware and other viruses.

If it is practically harmless and cannot steal from users, why do programmers still use browser hijacker?

It is all about the money, as the popular song goes. The desire to earn bigger and bigger incomes drives most developers into incorporating browser hijacker into their software products. Every displayed and even unintentionally clicked on pop up, banner or tab creates additional profit for them that can sustain their whole companies.

Is the Youndoo “Virus” a version of browser hijacker?

The answer to this question is yes. As it is so, the general qualities of browser hijacker as a whole also apply to Youndoo in particular. 
However, despite the initial annoyance Youndoo may represent to you, some of its features may even be considered helpful as it will always strive to offer you the best deals out there on anything you have been searching for.

How has your PC become infected with Youndoo?

Here we are going to discuss in what ways browser hijacker may become a part of your system and what you should do if you want to avoid it. In most of the cases, Youndoo becomes incorporated in your system together with another piece of software, usually free – the so-called software bundle. When you venture into installing your newly downloaded free program, there might also be browser hijacker inside the bundle. The most common mistake users tend to make, when it comes to the installation of new software, is to install it with the automatic/ easy/ default setup in the installation wizard. This action is exactly what presents you with Youndoo.

Always remember to install any program with the manual/ custom/ advanced setup, if you want to avoid receiving presents like browser hijacker. Other possible means of spreading such ad-generating software are spam emails, torrents, suspicious hyperlinks on shady websites and shareware.

Some prevention and removal tips

If you are interested in NEVER catching Youndoo again, we can advise you to be careful when it comes to the sources of the software you download and install. Moreover, another useful piece of advice is to purchase a reliable anti-malware tool to block potentially dangerous content. Also, it is always a good idea to have a Firewall and a pop-up blocker to help you stop at least the webpage-hosted advertisements that may ruin your browsing experience.

If you are interested in uninstalling Youndoo, you may find it necessary to take a look at the removal guide below that offers an effective solution to your problem. The steps you will find there will assist you in successfully removing this annoyance.


Name Youndoo
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  Most commonly – an unusually big number of popping up ads.
Distribution Method Together with other software in software bundles. Possibly within spam emails, torrents and shareware.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version.
More information about SpyHunter and steps to uninstall.

Youndoo “Virus” Removal


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Remove Youndoo from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove Youndoo from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Youndoo from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

If the guide didn’t help you, download the anti-virus program we recommended or ask us in the comments for guidance!


    • Hi fra,
      did you complete the steps under Safe Mode? Did you try to change your settings in Chrome ?

      • Actually after restarting the pc everything worked just fine after going through all these thank you very much, it’s the only guide that goes into details!

        • You are welcome fra :). In future remember that if you have any other issues we are here and we will be glad to help you again 🙂

  • I had that youndoo virus in my pc last night…it causes my pc speed to get slowed nd even my wifi adapter get uninstalled….i unistalled it already….so now the prblm is my computer’s speed which is still slow nd my tenda is still not working…

  • Hello, Quinn. First of all, did you try all of the steps described in the guide? Did you check your program installs in the Control Panel or your Hosts file for suspicious IP addresses. Also, if your browsers cannot connect to internet, you can try the following: In your Start menu search field type cmd and right-click on the first result. Select Run as Administrator. In the resulting window type this command: netsh winsock reset . After that, hit Enter and when the command has been executed, restart your PC. Your browsers should work now. Just make sure to do ALL the steps from the guide in order to remove the unwanted program.


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