Just cool captcha Virus

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Just cool captcha

Just cool captcha is a site-redirecting app that will cause uncontrolled generation of obstructive ads and sudden page-redirects in your main browser if it gets installed on the computer. Just cool captcha can oftentimes be found inside third-party apps as well as within the attachments of spam email messages.

Just Cool Captcha
The Justcoolcaptcha.top virus will display pop up ads and notifications


Browser hijackers such as Justcoolcaptcha, Lookaside.fbsbx.com, GoSearches.gg are not the most dangerous type of applications that you may encounter but we can say with confidence that they are among the most annoying ones. If Justcoolcaptcha has somehow sneaked in your system and has started to spam your screen with hundreds of aggressive advertisements and to mess with the settings of your main browser, then you will certainly agree with us.

In this post, we are going tell you about the Just cool captcha hijacker. Here, you will find a permanent solution to the constant flow of ads, pop-ups, banners and sponsored page-redirects that this application may typically initiate as well as an effective method of removing all the changes made to your homepage, default search engine, toolbar and so-on, which Just cool captcha might have imposed to your Chrome, Firefox, Opera, Edge, Explorer or any other browser that you are currently using. Our “How to remove” team has prepared a detailed removal guide below with exact instructions on how to uninstall the unwanted browser hijacker from the system. The removal process is explained step-by-step and includes detailed screenshots so it should not be difficult for you to follow the given instructions. After all, Just cool captcha is not some stealthy virus, a Ransomware or a Trojan Horse infection and its elimination should not be a challenging task if you carefully follow the guide. However, if you have any questions or doubts about the files that you have to delete, we suggest you run a scan with the professional removal tool that is included in the guide in order to avoid making any mistakes that may destabilize your system.


If you are a user who is facing a browser hijacker for the first time, then you surely have a lot of questions about the nature and the purpose of an application like Justcoolcaptcha.top. Luckily, these applications like Justcoolcaptcha.top are not viruses and do not pose a direct threat to you or your system.

In fact, applications of this type are usually perfectly legitimate and are not intended to harass you like a Ransomware cryptovirus or a Spyware infection. However, there are a number of reasons why the browser hijackers are classified as potentially unwanted and why the users may want to remove them. The aggressive ad generation, the browser changes and the automatic page-redirects are the most obvious ones but another one of these reasons is the method of distribution of these applications. Most users usually don’t have a clue when and how a piece of software like Just cool captcha can get installed in their system. And this is mainly because the browser hijackers are typically bundled in the installation wizards of other applications that people willingly download and install on their PCs. However, since the presence of the hijacker in the installation package may oftentimes not be clearly disclosed, one may need to specifically click on the Advanced or the Custom menu in order to find and disable the added hijacker component. However, most people don’t pay close attention to these settings and that’s how many end up with such additional software without actually wanting it.


NameJust cool captcha
TypeBrowser Hijacker
Detection Tool

*Source of claim SH can remove it.

Remove Just cool captcha Virus

It’s possible to get rid of browser hijackers like Just cool captcha, despite their bad reputation. However, if this is your first time dealing with a hijacker representative, you may need to follow some specific steps. The following instructions are a good starting point:

  • If Just cool captcha has taken over your browser, go to the main settings of your browser and choose More Tools (or Add-ons).
  • Go to the Extensions tab and open it to see all the extensions installed in the hijacked browser.
  • Remove Just cool captcha and/or any other extension that appears potentially unwanted in the list. No browser extension is necessary for your system to operate properly, but it may be the source of obtrusive advertising, banners, and even dangerous activity.
  • Open a new tab and see whether the browser is working properly after you’ve removed the unwanted extensions.

If you’re still having trouble browsing because of Just cool captcha, please follow the instructions below for a more thorough uninstallation.


Keep in mind that you will have to restart your computer many times throughout the removal process. Therefore, we recommend that you bookmark this page for future reference to make things simpler for you. Or, you can open this page on another device if you’d like to view it from there.

Next, please follow this link to reset your computer in Safe Mode. This will help you locate all hijacker processes and files on your system and remove Just cool captcha more quickly and easily.



*Source of claim SH can remove it.

To stop any hijacker-related processes from running on your computer, open the Task Manager (CTRL + SHIFT + ESC) and click on the Processes tab (in Windows 8 and 10 it is the “Details” Tab). Next, try to identify the processes that you think are causing you the unstoppable stream of ads, redirects and on-screen disturbance.

To determine whether a process is dangerous, just select it, right-click, and then choose Open File Location from the menu that appears.


Run a free online virus check on all the files found in that folder using the scanner below:

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    If danger is detected in any of the files, the process should be ended by right-clicking on it and selecting End Process. As soon as you’re done with that, go ahead and delete the harmful files.


    Browser hijackers are increasingly being bundled with other appealing apps, and when a user downloads one of these via an installer, the hijacker is installed as an additional piece of software alongside the main app. Therefore, if you have recently installed new software and subsequently noticed that you were receiving Just cool captcha ads, you should remove the problematic application by going to the Start Menu >>>Control Panel>>> Programs and Features.

    After that, make a list of all the programs on your computer that you think are connected to the presence of Just cool captcha and uninstall them. You may also delete any other outdated apps that you won’t be using in the foreseeable future by following these steps.

    After you are done with that, close the Control Panel window and go to the Start menu. Type msconfig in the search box. Select the Startup tab in the System Configuration window that opens.


    If you have apps that are set to start as soon as the system starts, make sure they’re trusted. If you see a startup item that you suspect is a hijacker or has an unknown manufacturer, uncheck it immediately. To save your changes, click OK.


    *Source of claim SH can remove it.

    In addition to the hijacker, if you think that your computer has been infected with malware, you should check your computer’s Hosts file for signs of hacking.

    Using the Windows and R key combination, copy and paste the following command into the Run window, and then click OK:

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

    Next, check under Localhost in the text for strange-looking IP addresses:

    hosts_opt (1)

    Close the file if you find nothing wrong with it.

    If you see any strange IP addresses appearing below “Localhost” in your Hosts file, however, please let us know in the comments, and we’ll give you advice on what to do about them.

    A browser hijacker may have modified your DSN without informing you. Don’t worry, though, because we’ll show you how to undo all of those changes in the instructions below:

    • Open Network Connections, which may be found by searching for it in the Start Menu search bar.
    • Next, right-click on the Network Adapter that is currently in use and select > Properties.
    • You should now see a new Properties Window open, where you may choose Internet Protocol Version 4 (ICP/IP) and then click Properties at the bottom of the window.
    • Next, click on Obtain DNS server automatically and then on Advanced.
    • Click on the DNS tab in the Advanced window and select and remove anything that has been written there.


    After that, we’ll show you how to remove Just cool captcha from your browsers, one step at a time. The process should be followed even if you don’t use all the browsers installed on your computer.

    Select the shortcut icon of the browser that you want to clean and right-click on it. Then choose Properties:


    Click the Shortcut tab at the top of the Properties window and then, in the Target field, delete anything placed after .exe.

    Browser Hijacker Removal Instructions

    ie9-10_512x512  Remove Just cool captcha from Internet Explorer:

    To deal with Just cool captcha and its traces inside IE, click  IE GEAR and open the Manage Add-ons option.

    pic 3

    Disable any add-ons that could be related to the ad-generation and page-redirection that you are experiencing.

    After that, go to IE GEAR again and click > Internet Options. Make sure your homepage URL is the one that you have set and hasn’t been hijacked. If it is, just change it and click Apply.

    firefox-512 Remove Just cool captcha from Firefox:

    Start Firefoxthen go to the menu icon  mozilla menu ,click it and navigate to Add-ons > Extensions.

    pic 6

    Remove any browser extensions you don’t use or think are linked to the hijacker. If some of the extensions that you want to remove are active, you may first need to Disable them and then click on the Remove button.

    chrome-logo-transparent-backgroundRemove Just cool captcha from Chrome:

    For Google Chrome to be cleaned from any Just cool captcha traces, you need to quit it. Then, from My Computer (Computer) go to this location:

     C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. 

    You should find a folder called “Default“:

    Rename the Folder to Backup Default

    Select it and with a right-click, change the name to Backup Default.

    After that, restart Chrome and check how it operates after the change.


    To find out whether Just cool captcha has added any registry entries that may help it gain persistence on your system, first, start the Registry Editor (type Regedit in the Windows search box and press Enter). Next, search for such entries by pressing CTRL+F and typing the name of the browser hijacker in the Find box. Then, start a search and carefully delete those registry entries related to the hijacker.

    If the registry search does not provide any results, try searching for random files in the following folders from the left panel of the Editor:

    • HKEY_CURRENT_USER—-Software—–Random Directory.
    • HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    • HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

    You should go through each one of them and delete everything that you know is from Just cool captcha.

    Attention! Registry entries should only be tinkered with by expert users, since removing anything unrelated to the hijacker may harm the system. When dealing with registry files for the first time, it is strongly advised that you download the anti-virus software we suggest and perform a scan on your computer to ensure that you can safely get rid of the browser hijacker that is causing the problem.

    What is Just cool captcha?

    Just cool captcha is a type of marketing software that spreads via file-bundling and aims to get installed in the user’s main browser in order to flood it with ads. To be more effective at advertising, Just cool captcha may also replace the browser’s default search engine and homepage.

    If you’ve noticed any sort of unusual browser behavior, including sudden page redirects to obscure sites, the display of annoying ads even when visiting websites that don’t normally have them, or changes in the starting page and/or the search engine of the browser, this almost certainly means that there is a hijacker like Just cool captcha in the browser.

    The aim of Just cool captcha and other similar undesirable apps is to earn money for their creators by employing the popular Pay-Per-Click and Pay-Per-View methods. Those methods allow the hijacker to generate income from every click that users make on its ads and every visit from users to the sites that the hijacker promotes. While this sort of activity won’t directly damage your system, it can certainly put it in danger, so it’s advisable not to allow Just cool captcha to stay in your browser.

    How dangerous is Just cool captcha?

    Just cool captcha is less dangerous if we compare it to Ransomware or a Trojan, but it’s still not a safe app and must therefore be deleted from your PC. One dangerous thing about Just cool captcha is that it can automatically reroute your browser to questionable sites.

    The main issue here is that this sort of application is designed to promote anything, without any regard as to whether the marketed content is safe or reliable. In fact, in many cases, the appearance of the ads shown by browser hijackers may be misleading and deceitful so that, once you click on the ad, you get sent to a page that has nothing in common with what seemed to be getting advertised.

    In this way, you could end up on unreliable or outright dangerous sites that are hosted by scammers and hackers and are designed to trick you, get you to share personal details, and/or persuade you into downloading malware.

    How to remove Just cool captcha?

    To remove Just cool captcha, you should start by ensuring that you delete any recently-installed program that could have helped the hijacker infect your browser. After that, in order to fully remove Just cool captcha, you must also clean the browser from rogue add-ons and then clear its data.

    Here are the main steps that must be performed to ensure that the hijacker is taken care of:
    1. First, you need to check the Uninstall a Program/Programs and Features list in your Control Panel for any recent install that may be undesirable and delete it.
    2. Next, check for rogue Just cool captcha processes in the Task Manager, quit them, and also delete their folders.
    3. Also check the Hosts file, the network DNS settings, the Startup items, and the Registry and if the hijacker has added/changed anything in them, restore them to their regular states.
    4. Lastly, go to your main browser, delete from it any add-ons you don’t recognize or trust, and delete the browser’s cookies, cache, and history. Then do the same with any other browsers in the system.


    About the author


    Brandon Skies

    Brandon is a researcher and content creator in the fields of cyber-security and virtual privacy. Years of experience enable him to provide readers with important information and adequate solutions for the latest software and malware problems.

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