PUP.Optional.DNSUnlocker is a heuristic detection designed to generically detect a Potentially Unwanted Program. A potentially unwanted application is a program that contains adware, installs toolbars or has other unclear objectives.
When infected with PUP.Optional.DNSUnlocker the common symptoms include:
- Advertising banners are injected with the web pages that you are visiting.
- Random web page text is turned into hyperlinks.
- Browser popups appear which recommend fake updates or other software.
- Other unwanted adware programs might get installed without the user’s knowledge.
Always opt for the custom installation and deselect anything that is not familiar, especially optional software that you never wanted to download and install in the first place. It goes without saying that you should not install software that you don’t trust.
How to remove PUP.Optional.DNSUnlocker (Removal Guide)
Please perform all the steps in the correct order. If you have any questions or doubt at any point, STOP and ask for our assistance.
To remove PUP.Optional.DNSUnlocker, follow these steps:
- STEP 1: Scan your computer with Malwarebytes
- STEP 2: Scan your computer with HitmanPro
- (OPTIONAL) STEP 3: Scan your computer with Zemana AntiMalware
- (OPTIONAL) STEP 4: Reset your browser to default settings
STEP 1: Scan your computer with Malwarebytes
Malwarebytes is a powerful on-demand scanner which will remove the PUP.Optional.DNSUnlocker malware from your machine. It is important to note that Malwarebytes will run alongside antivirus software without conflicts.
- You can download download Malwarebytes from the below link.
Malwarebytes DOWNLOAD LINK (This link will open a new web page from where you can download “Malwarebytes”)
- Once downloaded, close all programs, then double-click on the icon on your desktop named “mbam-setup” to start the installation of Malwarebytes.
You may be presented with a User Account Control dialog asking you if you want to run this file. If this happens, you should click “Yes” to continue with the installation.
- When the installation begins, you will see the Malwarebytes Setup Wizard which will guide you through the installation process.
To install Malwarebytes on your machine, keep following the prompts by clicking the “Next” button.
- Once installed, Malwarebytes will automatically start and will update the antivirus database. To start a system scan you can click on the “Scan Now” button.
- Malwarebytes will now start scanning your computer for the PUP.Optional.DNSUnlocker browser hijacker. When Malwarebytes is scanning it will look like the image below.
- When the scan has completed, you will be presented with a screen showing the malware infections that Malwarebytes has detected. To remove the malicious programs that Malwarebytes has found, click on the “Remove Selected” button.
- Malwarebytes will now quarantine all the malicious files and registry keys that it has found. When removing the files, Malwarebytes may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot your computer, please allow it to do so.
STEP 2: Scan your computer with HitmanPro
HitmanPro finds and removes malware, adware, bots and other threats that even the best antivirus suite can oftentimes miss. It’s designed to run alongside your antivirus suite, firewall and other security tools.
- You can download HitmanPro from the below link:
HITMANPRO DOWNLOAD LINK (This link will open a new web page from where you can download “HitmanPro”)
- Double-click on the file named “HitmanPro.exe” (for 32-bit versions of Windows) or “HitmanPro_x64.exe” (for 64-bit versions of Windows).
Click on the “Next” button, to install HitmanPro on your computer.
- HitmanPro will now begin to scan your computer for malware.
- When it has finished it will display a list of all the malware that the program found as shown in the image below. Click on the “Next” button, to remove malware.
- Click on the “Activate free license” button to begin the free 30 days trial and remove all the malicious files from your computer.
(OPTIONAL) STEP 3: Scan your computer with Zemana AntiMalware
Zemana AntiMalware Free is a second opinion malware scanner which can detect malicious programs that your antivirus has failed to find.
- You can download Zemana AntiMalware Free from the below link:
ZEMANA ANTIMALWARE FREE DOWNLOAD LINK (This link will start the download of “Zemana AntiMalware Free”)
- Double-click on the file named “Zemana.AntiMalware.Portable” to perform a system scan with Zemana AntiMalware Free.
You may be presented with a User Account Control dialog asking you if you want to run this program. If this happens, you should click “Yes” to allow Zemana AntiMalware to run.
- When Zemana AntiMalware will start, click on the “Scan” button to perform a system scan.
- Zemana AntiMalware will now scan your computer for malicious programs. This process can take up to 10 minutes.
- When Zemana has finished finished scanning it will show a screen that displays any malware that has been detected. To remove all the malicious files, click on the “Next” button.
Zemana AntiMalware will now start to remove all the malicious programs from your computer. When the process is complete, you can close Zemana AntiMalware and continue with the rest of the instructions.
(OPTIONAL) STEP 4: Reset your browser to default settings
This step should be performed only if your issues have not been solved by the previous steps.
- Click on Chrome’s main menu button, represented by three horizontal lines. When the drop-down menu appears, select the option labeled Settings.
- Chrome’s Settings should now be displayed in a new tab or window, depending on your configuration. Next, scroll to the bottom of the page and click on the Show advanced settings link (as seen in the below example).
- Chrome’s advanced Settings should now be displayed. Scroll down until the Reset browser settings section is visible, as shown in the example below. Next, click on the Reset browser settings button.
- A confirmation dialog should now be displayed, detailing the components that will be restored to their default state should you continue on with the reset process. To complete the restoration process, click on the Reset button.
- Open Internet Explorer, click on the “gear icon” in the upper right part of your browser, then click again on Internet Options.
- In the “Internet Options” dialog box, click on the “Advanced” tab, then click on the “Reset” button.
- In the “Reset Internet Explorer settings” section, select the “Delete personal settings” check box, then click on “Reset” button.
- When Internet Explorer has completed its task, click on the “Close” button in the confirmation dialogue box. You will now need to close your browser and then you can open Internet Explorer again.
- In the upper-right corner of the Firefox window, click the Firefox menu button (), then click on the “Help” () button.
- From the Help menu, choose Troubleshooting Information.
If you’re unable to access the Help menu, type about:support in your address bar to bring up the Troubleshooting information page.
- Click the “Refresh Firefox” button in the upper-right corner of the “Troubleshooting Information” page.
- To continue, click on the “Refresh Firefox” button in the new confirmation window that opens.
- Firefox will close itself and will revert to its default settings. When it’s done, a window will list the information that was imported. Click on the “Finish“.
If you are still experiencing problems while trying to remove PUP.Optional.DNSUnlocker malware, you can ask for help in our Malware Removal Assistance forum.