Ads by Browser Extension

Also Known As: Browser Extension adware
Type: Adware
Distribution: Moderate
Damage level: Medium

Browser Extension removal instructions

What is Browser Extension?

Intrusive online advertisements, 'Ad by Browser Extension', are delivered by potentially unwanted programs and browser extensions that employ a deceptive software marketing method called 'bundling' to infiltrate Internet browsers (Internet Explorer, Google Chrome, and Mozilla Firefox). This marketing method allows developers to distribute their software together with other programs, and for this reason, most infections are caused by reckless download and installation of freeware downloads. Ads by Browser Extensions redirect users to the Advertising Support website. The types advertisements delivered include banner, coupon, and pop-up ads. Clicking advertisements generated by rogue browser plug-ins (such as 'Ad by Browser Extension') may lead to further adware or malware infections.

Browser Extension adware

Most popular freeware download websites including download.com, soft32.com, and softonic.com, use bundling to monetize their free services and traffic. Although these websites claim that download managers promote '100% legitimate and virus-free' applications, reckless download and installation of freeware often leads to high-risk adware or malware infections. To prevent installation of adware that causes 'Ad by Browser Extension' advertisements, closely inspect each step of the free software download procedure and uncheck all additional applications (for example: add-ons, toolbars, browser setting modifications, etc.) listed for installation. In addition, select the 'Custom' or 'Advanced' options when installing downloaded software - this will reveal any bundled applications listed for installation and allow you to decline them. You are strongly advised to follow the removal guide provided to uninstall all suspicious plug-ins from your Internet browsers.

Rogue browser add-ons that generate 'Ad by Browser Extension' advertisements are similar to other adware-type applications. These provide no useful features and deliver intrusive online ads. Some examples are WebBrowser, I-Cinema, SlimPrice, deals, and many others. Intrusive online advertisements employed by these potentially unwanted programs are displayed on websites visited and are bundled with third-party browser plug-ins. Installation of browser extensions causing 'Ad by Browser Extensions' can be prevented by paying close attention to each step of the free software download and installation process. To eliminate these annoying advertisements, study the extension list within your Internet browser settings and uninstall all suspicious recently-installed browser add-ons.

Browser Extension ads leading to the advertising-support.com website:

Advertising Support ad network

Intrusive online advertisements 'Ad by Browser Extension':

Obtrusive advertisements delivered by Browser Extension adware Ads generated by Browser Extension adware

Instant automatic removal of Browser Extension adware: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Browser Extension adware. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Browser Extension ads removal:

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

Windows XP users:

Accessing Add or Remove Programs in Windows XP

Click Start, choose Settings and click Control Panel. Locate and click Add or Remove Programs.

Windows 10 and Windows 8 users:

Accessing Programs and Features (uninstall) in Windows 8

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.

Mac OSX users:

Uninstall app in OSX (Mac)

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.

Browser Extension adware uninstall via Control Panel

In the uninstall programs window, look for any suspicious recently-installed applications (e.g., eDeals), select these entries and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted program that causes Browser Extension ads, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove Browser Extension ads from Internet browsers:

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logo Remove malicious add-ons from Internet Explorer:

Removing Browser Extension ads from Internet Explorer step 1

Click the "gear" icon Internet Explorer options icon (at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently-installed suspicious extensions, select these entries and click "Remove".

Removing Browser Extension ads from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the browser extension adware, reset your Internet Explorer settings to default.

Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows XP

Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logo Remove malicious extensions from Google Chrome:

Removing Browser Extension  ads from Google Chrome step 1

Click the Chrome menu icon Google Chrome options icon (at the top right corner of Google Chrome), select "Tools" and click "Extensions". Locate: all recently-installed suspicious browser plug-ins, select these entries and click the trash can icon.

Removing Browser Extension ads from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the browser extension adware, reset your Google Chrome browser settings. Click the Chrome menu icon Google 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.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logo Remove malicious plugins from Mozilla Firefox:

Removing Browser Extension ads from Mozilla Firefox step 1

Click the Firefox menu firefox menu icon (at the top right corner of the main window), select "Add-ons". Click "Extensions", in the opened window, remove all recently-installed suspicious browser add-ons.

Removing Browser Extension ads from Mozilla Firefox step 2

Optional method:

Computer users who have problems with browser extension adware removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

removing adware from safari step 1 - accessing preferences

Make sure your Safari browser is active, click Safari menu, and select Preferences....

removing adware from safari step 2 - removing extensions

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...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge logoRemove malicious add-ons from Microsoft Edge:

Removing browser hijackers from Microsoft Edge step 1

Click the three horizontal dots icon edge more icon (at the top right corner of Microsoft Edge), select "Extensions". Look for any recently-installed suspicious extensions, right click your mouse on these entries and click "Uninstall".

Removing browser hijackers from Microsoft Edge step 2

Optional method:

Click the three horizontal dots icon edge more icon (at the top right corner of Microsoft Edge), and select Settings.

Resetting Microsoft Edge settings step 1

In the opened tab, click the "Choose what to clear" button.

Resetting Microsoft Edge settings step 2

Click Show more and select everything, and then click the "Clear" button.

Resetting Microsoft Edge settings step 3

  • If this didn't help, please follow these alternative instructions explaining how to reset Microsoft Edge browser.

Summary:

declining installation of adware while downloading free software sampleCommonly, 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.

Removal assistance:
If you are experiencing problems while trying to remove browser extension adware from your computer, please ask for assistance in our malware support forum.

Post a comment:
If you have additional information on browser extension adware or it's removal please share your knowledge in the comments section below.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Removal Instructions in other languages
Software uninstall instructions
Malware activity

Global virus and spyware activity level today:

Medium threat activity
Medium

Increased attack rate of infections detected within the last 24 hours.

QR Code
Browser Extension adware QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Browser Extension adware on your mobile device.
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Platform: Windows

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