DNSAdlocker – Description and Removal Manual - How to, Technology and PC Security Forum | SensorsTechForum.com

DNSAdlocker – Description and Removal Manual

TypePUP, adware.
Short DescriptionDNSAdlocker is promoted as an application to improve the user’s online experience.
SymptomsMay run suspicious background processes. PC Slowdowns. Intrusive advertised content.
Distribution MethodVia freeware packages (bundling), or from its official website and shareware pages. Possible via redirects to such pages.
Detection toolDownload Malware Removal Tool, to See If Your System Has Been Affected By DNSAdlocker

DnsAdlocker pop-up preview.

DnsAdlocker pop-up preview.

An ad-supported unwanted program, called DNSAdlocker has recently become the reason for many complaints in online forums. The main cause of those complaints is the advertised content, this annoying PUP may display. Originally such pop-ups, ad-supported search results, highlighted text and other adverts may lead to malicious third-party sites that are being advertised this way. This is why the immediate removal of DNSAdlocker from any machine is highly advisable.

How Did I Install DNSAdlocker?

One way to get affected by this bad chunk of code is by clicking on online advertisements that may initiate a download of such software that is being advertised as a useful tool of some sort. Another way to get affected by it is by downloading programs like torrent engines, media players, file converters and others from free software providing sites. This can happen if the site providing the free software decides to include PUPs, like DNSAdlocker as free ‘extras’ in the installer program. It is otherwise known as bundling, and it is a very effective method of massive software distribution over the web. It is also a profitable marketing service, and this is why many third-party services prefer it.

DNSAdlocker in Detail

Similar to DNS Unlocker, DNS Unblocker and DNS Keeper, once installed on your computer, this malicious program may run as an active .exe application on your computer and slow it down. Some affected users also believe that they have experienced internet connection problems with their computers, mainly related to their DNS settings. More to it than that, this software may employ tracking technologies on your computer, such as:

  • Browsing cookies.
  • Session cookies.
  • Web beacons.
  • Flash Cookies (Or Local Shared Objects).
  • Pixels

Those technologies could track the user’s online clicks, website visits, and bookmarks with the one and only purpose of implementing behavioral advertising. This means that they may display targeted ads based on the user’s searches. Usually, the advertisements displayed are two types:

  • Some may display ads, based on what the user searches most in general on the internet from the beginning of time.
  • Some may display advertisements based on the moment i.e. if a user searches for something or visits something the ads may pop-up instantly on that subject.

More to it than that, the sole generating and the displaying of advertisements by DNSAdlocker may in some cases cause PC slowdowns. This is because it generally consumes a lot of random access memory(RAM) and processing power (CPU).

The main reason these ads are dangerous, however, is the detail that they often redirect the user to third-party websites. Since most adware developers do not mind as to what it is they advertise, they often promote suspicious sites. And some shady sites may conceal different dangers from the user:

  • Malicious drive-by downloads that may infect the user’s computer with Malware (Viruses, Worms, Trojans, Scareware, etc.)
  • Fake customer support toll-free scams that scare the user with different messages and make him conduct expensive phone calls.
  • Subscribing of users to an expensive SMS service that drains money from their SIM cards.
  • Scam users into filling out fake registration forms with their personal and financial information as a part of a fake prize claims or participation in surveys with a reward of some sort.

These are most likely not even half of the threats that are connected with online cyber-crime. They are constantly evolving, and this is why it is important to keep up to date with them all time.

Removing DNSAdlocker

Similar to most adware PUPs, the removal of this program is not a tricky process. To manually uninstall it, just follow the removal instructions illustrated below. And since this program may modify settings on your computer that cost a lot of time to restore manually you have several options. One is to restore your your OS to an earlier checkpoint from System Restore (for Windows users) or download an anti-malware program that will find and eliminate all left-over objects after manual uninstall of DNSAdlocker.

And if you are concerned about cookies, please check these instructions to disable them:

For Google Chrome:

Go to Options/Advanced Settings/Privacy/Content Settings/Cookies and modify what to allow and to block.

For Internet Explorer:

Go to the Privacy Tab of the Internet Options from Tools. Use the slider to set the protection level or check Advanced Settings.

Mozilla Firefox:

Go to Tools/Cookie Manager or go to Edit/Preferences/Privacy and Security and set options in the Cookie section. There are three possibilities: Block, Session, Allow. If you want to block completely them, you should press block, but bear in mind that you may not be able to use some websites.

For Opera:

Go to Settings/Preferences (Ctrl+F12 hotkeys). After that go to Advanced/Cookies and choose one of the following options:

Step 1: Remove/Uninstall DNSAdlocker 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 DNSAdlocker.

    Step 2: Remove DNSAdlocker 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 DNSAdlocker and click “Remove


    After DNSAdlocker 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 DNSAdlocker and click on the garbage bin icon on the right of it.
  • uninstall-fig9

  • After DNSAdlocker 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 DNSAdlocker 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 DNSAdlocker 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 DNSAdlocker
    Click ‘Uninstall’


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

    Step 3: Remove DNSAdlocker 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 DNSAdlocker associated objects.

    NOTE! Substantial notification about the DNSAdlocker threat: Manual removal of DNSAdlocker 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.

    Berta Bilbao

    Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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