Suffering from various pop-up ads when shopping online? The homepage and new tab have been hijacked to other unfamiliar website? A strange toolbar shows up in your web browser? All those are caused by adware and potentially unwanted program and fulfilled through the add-on, extension or plugin install on your web browser.
In most cases, adware adds add-on, extension or plugin to your web browser in order to display in-text, pop-up and video ads in the webpage you are visiting; browser hijackers install web extension to take control of your browser in order to modify the search engine and redirect web searches to whatever search engine owned by the partner.
To solve those problems you have to uninstall the main program from your computer and remove related browser add-on, extension and plugin at the same time.
Guide on removing unwanted browser add-on, extension and plugin
Outline of the removal guide:
Step 1 > Uninstall the main program
Those adware, browser hijackers or toolbar usually sneak into your computer along with other free downloads, so you should uninstall unknown or unwanted programs installed recently. We will take the removal of Coupon Locker as an example.
For Windows 8 Users:
Right-click the screen’s bottom-left corner > Control Panel > Uninstall a program
Uninstall Coupon Locker adware and other unknown or unexpected programs.
For Windows 7/Vista Users:
Go to Start button > Control Panel > Uninstall a program / Programs and Features
Uninstall Coupon Locker adware and any suspicious third-party application
For Windows XP Users:
Go to Start button > Settings > Control Panel > Add/Remove Programs
Remove Coupon Locker adware and any suspicious third-party application
Step 2 > Remove malicious browser add-on, extension and plugin
For Internet Explorer Users:
In most cases, the browse add-on, extension or plugin in Internet Explorer will be removed along with the uninstallation of the main program. You can go through this step to check if it is still there.
To remove extension: click on the gear icon or Tools → select Manage Add-ons → go to Toolbars and Extensions tab → right click on Coupon Locker and any other suspicious extensions → choose Disable in the drop-down menu → close the window and click on OK button
For Mozilla Firefox Users:
To remove extensions and plugins: click on the orange Firefox button on the upper left corner of the browser → hit Add-ons → go to Extensions tab → Remove suspicious extensions (Coupon Locker)
Switch to Plugins tab → Disable suspicious plugins
For Google Chrome Users:
To remove extension: Click on Customize icon (Wrench or 3 bar icon) > Tools > Extensions → locate Coupon Locker and any unwanted or unknown extension → click the Recycling Bin to remove it
When remove the extensions on Chrome, you may be informed that the extension is managed and cannot be removed or disabled.
Remove managed Chrome extension
1. Click on Customize icon (Wrench or 3 bar icon) > Tools > Extensions
Or, type chrome://extensions in the address bar and hit enter
Check the Developer mode option and copy the ID value of the extension.
2. Remove its registry entries:
Open the Registry Editor, find and delete the registry key which has the same value located at HKEY_LOCAL_MACHINE > SOFTWARE > Policies > Chrome > ExtensionInstallForcelist.
To open Registry Editor: Press Windows Key + R → type regedit → hit Enter
3. Remove related files:
Go to hard disk C and put the ID value in the search field then search. In the search results, delete all the files and folders located at C:\Users\ user name\AppData\Local\Google\Chrome\User Data\Default\Extensions
Now this managed extension should have been removed completely.
Optional Solution > Remove Unwanted Browser Add-on, Extension and Plugin with Cloud System Booster
Cloud System Booster free download link: http://www.dotfab.com/download_csb.html
1. Uninstall the main program with Anvi Uninstaller
Anvi Uninstaller is a tool integrated in Cloud System Booster which is a system cleaner and optimizer. Anvi Uninstaller will scan and delete leftovers after uninstall a program.
Launch Cloud System Booster → go to Toolbox → Download and Run Anvi Uninstaller → scroll down the Recently Installed list → locate coupon locker and any suspicious program → hit Uninstall to remove
Please note that the Prefect Scan feature is only available for Cloud System Booster Pro version users. You can use this function by getting a trail license or upgrade to pro version.
Cloud System Booster purchase link: http://www.dotfab.com/csbupgrade.php
2. Remove unwanted add-on, extension and plugins
Slim Toolbar featured in Cloud System Booster enables you to manage toolbars and extensions on Internet Explorer, Firefox and Chrome simultaneously.
Click on the up arrow on the Home tab of Cloud System Booster to go to Slim Toolbar, then remove all the suspicious extensions and plugins.
When you are not on the Home tab, you can find Toolbar Manager on the right side.
3. Clean up residual files and invalid registry entries
Go to Disk Cleaner and check the items you want Cloud System Booster to clear.
Switch to Home tab → click Quick Care button → click Clear button after scan finished