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Remove DNS Blocker Pop-ups Completely

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A new ad-supported application called DNS Blocker has been reported to go around and display advertisements on user PCs. The software is reported to also modify the DNS settings of affected computers. Users who have been affected by DNS blocker should immediately focus on removing this indirect threat since it may lead to dangerous third-party websites and sniff traffic from their computers.

NameDNS Blocker
Short DescriptionMay modify the DNS settings of the compromised machine, may sniff network traffic and might display advertisements.
SymptomsThe user may witness fake Java Update downloads as well as redirects to other potentially harmful domains.
Distribution MethodVia PUPs, installed by bundling or by visiting a suspicious third-party site that is advertising it.
Detection ToolDownload Malware Removal Tool, to See If Your System Has Been Affected by DNS Blocker
User Experience Join our forum to discuss DNS Blocker.

DNS Blocker – Distribution

To spread to different computer this particular blocker uses several different methods. One of them may be via bundled downloads. Such type of installers may be downloaded from third-party software providing websites. These may be free programs like your favorite media player, video recorder or other notorious converters and apps. The installers of those programs may be configured to include DNS Blocker in them posing as a “free extra” to the installer, such as the example in the picture below:


Such installers may be found in various locations on the web:

  • Torrent sites.
  • Unfamiliar software providing websites.
  • Other users who have shared them online.

It is recommended to evade installing software from online locations other than the officially provided ones.

DNS Blocker In Detail

Once installed on your computer, DNS Blocker may tamper with the following registry entry to change your DNS(Domain Name System) address:

→ HKLM\System\CurrentControlSet\Services\Tcpip\Parameters\NameServer= “{Your DNS address}” \\ {Machine name}

The changed DNS address can be seen if you go to:

→ View Network Connections>Properties>Internet Protocol Version Properties> Preferred DNS Server and Alternative DNS Server


Modifying the DNS address of a computer may allow cyber-criminals to sniff the network traffic of this device. This may allow crooks to obtain the passwords and other credentials from you. It may also allow them to track:

  • Your browsing history.
  • The online clicks.
  • Online searches.
  • Others.

This information may then be used by the creators of DNS Blocker to display various advertisements to you. The ads may vary and be different types:

  • Pop-ups.
  • Ad-supported search results.
  • Taken over banner ad-spaces.
  • Browser redirects.

All of the advertisements may lead to various third-party websites, which is the main reason why DNS Blocker is considered to be indirectly dangerous by malware researchers. This PUP(Potentially Unwanted Program) may conceal various risks from your computer:

Remove DNS Blocker from Your Computer

To uninstall this software, we strongly advise following the below-mentioned removal steps for maximum effectiveness. It is not obligatory but we also highly advise you to scan your computer with an advanced anti-malware software to remove all registry entries and files associated with DNS Blocker. Such scanning operation will also enable you to locate other malware or unwanted software in case it is currently residing on your computer and protect you from such in the future.

Delete DNS Blocker from Windows and Your Browser

1.Remove or Uninstall DNS Blocker in Windows
2.Remove DNS Blocker from Your Browser

Remove DNS Blocker automatically by downloading an advanced anti-malware program.

1. Remove DNS Blocker with SpyHunter Anti-Malware Tool
2. Back up your data to secure it against attacks related to DNS Blocker in the future
Optional: Using Alternative Anti-Malware Tools
NOTE! Substantial notification about the DNS Blocker threat: Manual removal of DNS Blocker 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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