How to remove Quantum Ad Blocker adware and the ads it displays?
Written by Tomas Meskauskas on (updated)
What is Quantum Ad Blocker?
Quantum Ad Blocker is a rogue browser extension, which is endorsed as an adblocker - a tool that blocks ads on visited websites. However, this piece of software operates by delivering intrusive advertisements instead. Due to this, Quantum Ad Blocker is classified as adware and a PUA (Potentially Unwanted Application).
Quantum Ad Blocker adware in detail
Adware enables the placement of third-party graphical content (e.g., pop-ups, banners, coupons, etc.) on any visited website and/or different interfaces. The delivered adverts severely diminish the browsing experience and endanger device/user safety.
Intrusive advertisements promote various sale-oriented, rogue, deceptive/scam, and malicious sites. Furthermore, once clicked on, the ads can download/install software (e.g., PUAs) without user permission.
Adware typically has data tracking abilities, and Quantum Ad Blocker is not an exception to this. Targeted information includes (but is not limited to) browsing and search engine histories, IP addresses, and personally identifiable details. The gathered data is then shared with and/or sold to third-parties (potentially, cyber criminals).
In summary, the presence of unwanted software on devices can result in system infections, serious privacy issues, financial losses, and even identity theft.
| Name | Ads by Quantum Ad Blocker |
| Threat Type | Adware, Unwanted ads, Pop-up Virus |
| Browser Extension(s) | Quantum Ad Blocker |
| Supposed Functionality | Adblocker/ adblocking tool |
| Symptoms | Seeing advertisements not originating from the sites you are browsing. Intrusive pop-up ads. Decreased Internet browsing speed. |
| Distribution Methods | Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers. |
| Damage | Decreased computer performance, browser tracking - privacy issues, possible additional malware infections. |
| Malware Removal (Windows) | To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. |
Adware in general
Reputation Lookup, Movie Finder, Simply Convert Files, and AdBlock 360 are some examples of adware. It appears harmless and offers "handy" features, which are usually nonoperational. This applies to practically all PUAs. Instead of delivering on any promises, unwanted apps can run intrusive advertisement campaigns, cause redirects, hijack browsers, and collect private information.
How did Quantum Ad Blocker install on my computer?
PUAs are spread using the "bundling" marketing technique - packing ordinary programs with unwanted/malicious additions. Rushed download/installation processes increase the risk of unintentionally allowing bundled content into the system.
Intrusive adverts are used to proliferate PUAs as well. Upon being clicked, the ads can execute scripts to make stealthy downloads/installations. Some PUAs (e.g., Quantum Ad Blocker) also have "official" promotional/download webpages.
How to avoid installation of potentially unwanted applications?
It is advised to research software and download from official/verified sources. Untrustworthy download channels, e.g., Peer-to-Peer sharing networks, unofficial and free file-hosting sites, etc. - often offer bundled and hazardous content.
When downloading/installing, it is recommended to read terms, study possible options, use the "Custom/Advanced" settings, and opt-out from all additions. Intrusive advertisements appear legitimate; however, they redirect to highly questionable websites (e.g., pornography, adult-dating, gambling, etc.).
In case of encounters with ads and/or redirects of this kind, the system must be inspected and all suspicious applications and browser extensions/plug-ins detected - immediately removed from it. If your computer is already infected with Quantum Ad Blocker, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this adware.
Screenshots of the websites used to promote Quantum Ad Blocker adware:
Instant automatic malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:
- What is Quantum Ad Blocker?
- STEP 1. Uninstall Quantum Ad Blocker application using Control Panel.
- STEP 2. Remove Quantum Ad Blocker ads from Google Chrome.
- STEP 3. Remove 'Ads by Quantum Ad Blocker' from Mozilla Firefox.
- STEP 4. Remove Quantum Ad Blocker extension from Safari.
- STEP 5. Remove rogue plug-ins from Microsoft Edge.
Quantum Ad Blocker adware removal:
Windows 11 users:
Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.
Windows 10 users:
Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.
Windows 7 users:
Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.
macOS (OSX) users:
Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.
In the uninstall programs window, look for "Quantum Ad Blocker", select this entry and click "Uninstall" or "Remove".
After uninstalling the potentially unwanted application (which causes Quantum Ad Blocker ads), scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove Quantum Ad Blocker adware from Internet browsers:
Video showing how to remove potentially unwanted browser add-ons:
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon 
(at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate "Quantum Ad Blocker", select this entry and click the trash can icon.
Optional method:
If you continue to have problems with removal of the ads by quantum ad blocker, reset your Google Chrome browser settings. Click the Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plugins from Mozilla Firefox:
Click the Firefox menu 
(at the top right corner of the main window), select "Add-ons". Click "Extensions", in the opened window, remove "Quantum Ad Blocker".
Optional method:
Computer users who have problems with ads by quantum ad blocker removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active, click Safari menu, and select Preferences....
In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.
Optional method:
Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge menu icon 
(at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.
Optional method:
If you continue to have problems with removal of the ads by quantum ad blocker, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Summary:
Commonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.
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Frequently Asked Questions (FAQ)
What harm can adware cause?
Adware can diminish the browsing quality and system performance. Quantum Ad Blocker has data tracking abilities, which also makes it a threat to user privacy. Furthermore, adware-delivered ads often endorse malicious websites and applications.
What does adware do?
Advertising-supported software or adware - is designed to run intrusive advertisement campaigns. In other words, this software displays various adverts.
How do adware developers generate revenue?
Adware generates revenue by promoting a variety of websites, apps, products, and services. The developers of this software can get commission from ad clicks, site visits, product purchases, or similar.
Will Combo Cleaner remove Quantum Ad Blocker adware?
Yes, Combo Cleaner is capable of scanning devices and eliminating installed adware-type applications. It is noteworthy that manual removal may not be ideal, since various file leftovers may remain even after the software is removed. Hence, even though the adware itself is deleted - some of its components might still be present and running.
Outstanding!
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