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Remove Adware.DNS Unlocker Fully from Your PC

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NameAdware.DNS Unlocker
TypeAdware, PUP
Short DescriptionAdware.DNS Unlocker belongs to a potentially unwanted program family that display advertisements leading to third-party sites
SymptomsIntrusive banners and other forms of ads in the browser.
Distribution MethodBundling, unsafe browsing.
Detection toolDownload Malware Removal Tool, to See If Your System Has Been Affected By Ads by LaSuperba
User ExperienceJoin our forum to follow the discussion about Adware.DNS Unlocker .

DNS-Unlocker-siteDNS Unlocker is a highly suspicious unwanted program that is situated on users PC’s primarily via other programs. Besides administering targeted advertisements, the application also changes the DNS (Domain Name System) settings of the computer it’s in which is something that no user wants to have. DNS Unlocker is advertised as a program that allows users to use a specific DNS address in order to provide them with access to all restricted sites for their location. However, the app is heavily advertised and some users who use specific DNS address to access other networks may find themselves in trouble.

Adware.DNS Unlocker – How Did I Get It?

You may have been misled by an online advertisement believing that the app is useful for your machine. However do not get fooled. This program may do more harm than good, since it has relations to third-party sites which it advertises for profit.

The app is also believed to slip by user PCs by bundled downloads from third-party software providing sites. You may have missed it ‘as a free extra’ in one of the installation steps of a free program downloaded from site, different than its official one. What is worse is that some PUPs (Potentially Unwanted Programs) such as DNS Unlocker may not exist in the installation steps at all. Instead, they are mentioned in the EULA agreement and even experienced users tend to miss them. This is why it is advisable to never download programs from websites that are unfamiliar to you or you have seen to use bundling and to always use software for EULA agreements that detects specific words automatically, like EULAlyzer , for example.

Adware.DNS Unlocker – What Does It Do?

Once installed on your system, DNS Unlocker changes your Preferred DNS Address and it may also change the Alternative DNS Server. What is more, according to Symantec’s report the application situates the following files in the directory ProgramFiles\DNS Unlocker\ and Windir\Tasks\:

“config.ini; ConsoleApplication1.dll; DNSCONTRERAS.cer; dnscontreras.exe; Info.rtf; License.rtf; config.ini; LogoBlack.ico; LogoGreen.ico; LogoYellow.ico; Microsoft.Win32.TaskScheduler.dll; settings.ini; unins000.exe; unins000.dat; ZonaTools.XPlorerBar.dll; DNSCONTRERAS.job”

As other DNS Unlocker related .exe’s such as dnspallenville.exe in one of its versions, it is highly likely that the process dnscontreras.exe may remain active in your Windows Task Manager. What is more, you may be unable to uninstall the program even if you want to because you have to close it as an active process first.

What is more it creates a value in in the following registy key in the Windows Registry:


Besides creating registry values, the software also modifies some existing ones, like this one:

“HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Dhcp\Parameters\”{AD4E4E3D-9057-4796-8F2E-EB3CF04ED742}” = “[HEXADECIMAL VALUE]””

After the program has done that, it is reported to begin taking over ad spaces in users’ web browsers and display heavy advertising that may even slow the PC down. Also, such programs may show pop-ups and even advertisements that play a live video or a sound message.

Some users have even reported to be redirected from adware PUPs to sites that completely lock them out of their web browser, displaying a fake BSOD alert, such as the 1-888-991-9974 fake alert.
What is more, some users have reported seeing direct redirects to sites that when visited, alerted their antivirus for a drive-by download and execution of a malicious script.

Some users have even reported to see tech fake registration forms and surveys that demanded the financial information from the user for a free trial of a product or a service.

What is more, the software providers state that they may share different information with third-parties:

Cyber-criminals have become increasingly cunning and they have started to spread their scams via such in first sight useful programs. As far as the PUP developers may be concerned, they do not mind what it is they advertise as long as they make profit from it. This is why it is recommended to always keep up to date with the latest in malware as well as unwanted programs and methods of cyber-infection. Experts also advise users to always employ an external firewall as well as anti-malware program with active shields against intrusions since it will automatize the removal process and significantly save a lot of time plus headaches.

Removing Adware.DNS Unlocker Fully From Your PC

In case you have decided to remove this ad-supported application, you should carefully follow the removal manual below. Also, make sure you employ anti-malware software on your computer in order to detect any possible threats that may exist because of this PUP. For maximum protection and detection, be advised that you should also install an external firewall that is significantly difficult to be hacked as well as external process monitor. The anti-malware program can also be combined with an antivirus program to provide you with relevant protection against any future intrusions.

In case the instructions below do not help you and you are still experiencing advertisements by DNS Unlocker, make sure you describe your issue in its topic in our forum and experts will try their best to assist you.

Step 1: Remove/Uninstall Adware.DNS Unlocker in Windows

Here is a method in few easy steps to remove that program. No matter if you are using Windows 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program get left behind, and that can lead to unstable work of your PC, mistakes with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:

  • Hold the Windows Logo Button and “R” on your keyboard. A Pop-up window will appear (fig.1).
  • uninstall-virus-fig1

  • In the field type in “appwiz.cpl” and press ENTER (fig.2).
  • uninstall-virus-fig2

  • This will open a window with all the programs installed on the PC.
    Select the program that you want to remove, and press “Uninstall” (fig.3).
  • uninstall-virus-fig3

    Follow the instructions above and you will successfully uninstall Adware.DNS Unlocker.

    Step 2: Remove Adware.DNS Unlocker from your browser

    Remove a toolbar from Mozilla FirefoxRemove a toolbar from Google Chrome Remove a toolbar from Internet Explorer Remove a toolbar from Safari
    Start Mozilla Firefox Open the menu window


    Select the “Add-ons” icon from the menu


    Select Adware.DNS Unlocker and click “Remove


    After Adware.DNS Unlocker is removed, restart Mozilla Firefox by closing it from the red “X” in the top right corner and start it again.

    Start Google Chrome and Open the drop menu


  • Move the cursor over “Tools” and then from the extended menu choose “Extensions
  • uninstall-fig8

  • From the opened “Extensions” menu locate Adware.DNS Unlocker and click on the garbage bin icon on the right of it.
  • uninstall-fig9

  • After Adware.DNS Unlocker is removed, restart Google Chrome by closing it from the red “X” in the top right corner and start it again.
  • Start Internet Explorer:

  • Click “‘Tools’ to open the drop menu and select ‘Manage Add-ons’
  • uninstall-fig10

  • In the ‘Manage Add-ons’ window, make sure that in the first window ‘Add-on Types’, the drop menu ‘Show’ is on ‘All add-ons’
  • uninstall-fig11

    Select Adware.DNS Unlocker to remove, and then click ‘Disable’. A pop-up window will appear to inform you that you are about to disable the selected toolbar, and some additional toolbars might be disabled as well. Leave all the boxes checked, and click ‘Disable’.


    After Adware.DNS Unlocker has been removed, restart Internet Explorer by closing it from the red ‘X’ in the top right corner and start it again.

    Start Safari

    Open the drop menu by clicking on the sprocket icon in the top right corner.

    From the drop menu select ‘Preferences’
    In the new window select ‘Extensions’
    Click once on Adware.DNS Unlocker
    Click ‘Uninstall’


    A pop-up window will appear asking for confirmation to uninstall Adware.DNS Unlocker. Select ‘Uninstall’ again, and the Adware.DNS Unlocker will be removed.

    Step 3: Remove Adware.DNS Unlocker automatically by downloading an advanced anti-malware program.

    To clean your computer you should download an updated anti-malware program on a safe PC and then install it on the affected computer in offline mode. After that you should boot into safe mode and scan your computer to remove all Adware.DNS Unlocker associated objects.

    NOTE! Substantial notification about the Adware.DNS Unlocker threat: Manual removal of Adware.DNS Unlocker requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

    Ventsislav Krastev

    Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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