How to eliminate the Omni Ad Stopper adware-type browser extension
Written by Tomas Meskauskas on
What kind of software is Omni Ad Stopper?
Our researchers discovered the Omni Ad Stopper rogue browser extension during a routine investigation of suspect sites. This piece of software is endorsed as an adblocker – a tool that blocks online advertisements. However, upon examination, we determined that Omni Ad Stopper is advertising-supported software (adware).
Omni Ad Stopper adware overview
Adware operates by running intrusive advert campaigns. It enables the placement of third-party graphical content (e.g., pop-ups, banners, surveys, overlays, etc.) on visited websites and/or other interfaces.
It is noteworthy that to work as designed, advertising-supported software may need certain conditions, such as compatible browser/system specs or user geolocation, visits to particular sites, and so on. However, even if Omni Ad Stopper does not display advertisements – its presence on a system endangers device and user safety.
Adware-delivered adverts endorse online scams, unreliable/hazardous software, and even malware. When clicked on, some intrusive ads can execute scripts to perform stealthy downloads/installations.
Keep in mind that while legitimate products or services may be encountered through these advertisements – they are unlikely to be promoted by their actual developers.
Furthermore, software within this classification usually has data-tracking functionalities, and Omni Ad Stopper is not an exception. Information of interest may include: browsing and search engine histories, Internet cookies, usernames/passwords, personally identifiable details, finance-related data, etc. The collected information can then be shared with and/or sold to third-parties.
To summarize, the presence of software like Omni Ad Stopper on devices can lead to system infections, serious privacy issues, financial losses, and identity theft.
| Name | Ads by Omni Ad Stopper |
| Threat Type | Adware, Unwanted ads, Pop-up Virus |
| Browser Extension(s) | Omni Ad Stopper |
| Supposed Functionality | Ad-blocking |
| 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). |
| 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 examples
We have examined thousands of adware samples; Error Director, Site Resolver, and Web Ads Filter are merely a few of our latest finds.
Advertising-supported software typically appears legitimate and harmless. Users are enticed into downloading/installing adware by promises of various "useful" functionalities. However, these functions seldom work as advertised, and in most cases – they do not work at all.
It must be stressed that even if a piece of software operates as indicated by its promotional material – that is not definitive proof of either legitimacy or safety.
How did Omni Ad Stopper install on my computer?
Omni Ad Stopper has an "official" promotional webpage. Aside from such legitimate-looking pages, adware is endorsed on deceptive/scam sites.
Most users enter these webpages via redirects caused by mistyped URLs, websites utilizing rogue advertising networks, intrusive ads, spam browser notifications, or installed adware (with browser force-opening abilities).
Advertising-supported software can also be bundled with ordinary programs. The risk of allowing bundled content into the system is increased by downloading from dubious channels (e.g., freeware and third-party sites, Peer-to-Peer sharing networks, etc.) and by treating installations with negligence (e.g., using "Easy/Quick" settings, etc.).
Some intrusive advertisements can be triggered (by being clicked) to execute scripts that perform downloads/installations without user consent. These adverts are used to proliferate adware as well.
How to avoid installation of adware?
We strongly advise researching software and downloading it only from official/verified sources. Installation processes must be treated with caution, e.g., by reading terms, exploring available options, using the "Custom" or "Advanced" settings, and opting out of all additional apps, extensions, etc.
Another recommendation is to be careful while browsing since fraudulent and malicious online content usually appears legitimate and innocuous. For example, intrusive ads may look harmless yet redirect to unreliable and questionable websites (e.g., gambling, pornography, scam-promoting, adult dating, etc.).
If you keep encountering advertisements and/or redirects of this kind, inspect the system and immediately remove all suspicious applications and browser extensions/plug-ins. If your computer is already infected with Omni Ad Stopper, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate this adware.
Screenshots of Omni Ad Stopper adware's "official" website:
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 Omni Ad Stopper?
- STEP 1. Uninstall adware applications using Control Panel.
- STEP 2. Remove rogue extensions from Google Chrome.
- STEP 3. Remove rogue extensions from Mozilla Firefox.
- STEP 4. Remove rogue extensions from Safari.
- STEP 5. Remove rogue plug-ins from Microsoft Edge.
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 any unwanted applications, select these entries and click "Uninstall" or "Remove".
After uninstalling the unwanted applications, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove 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 "Extensions" and click "Manage Extensions". Locate "Omni Ad Stopper" and all other recently-installed suspicious extensions, select these entries and click "Remove".
Optional method:
If you continue to have problems with removal of the ads by omni ad stopper, 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 and themes". Click "Extensions", in the opened window locate recently-installed suspicious extensions, click on the three dots and then click "Remove".
Optional method:
Computer users who have problems with ads by omni ad stopper 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 omni ad stopper, 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 delivers ads that promote content capable of causing system infections, privacy issues, financial losses, and other serious problems. This software can decrease browsing quality and system performance. Additionally, adware typically has data-tracking abilities – hence, it is classed as a privacy threat.
What does adware do?
Adware stands for advertising-supported software. It runs intrusive advertisement campaigns. Primary functions can include displaying adverts on various interfaces, generating redirects, and gathering private data.
How do adware developers generate revenue?
Adware developers profit primarily via affiliate programs by endorsing content (e.g., websites, applications, browser extensions, products, services, etc.).
Will Combo Cleaner remove Omni Ad Stopper adware?
Yes, Combo Cleaner will scan your system and eliminate installed adware-type apps. Note that manual removal (unaided by security programs) might not be an ideal solution. In some cases, even after the adware has been manually removed – file leftovers remain hidden within the system. Furthermore, the remnants can continue to run and cause problems. Therefore, it is paramount to eliminate advertising-supported software thoroughly.
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