Remove Adware or pop-ups from Mozilla Firefox (Complete Guide)


firefox logoWhen you experience advertisements and pop-ups in Mozilla Firefox it is advised to check Mozilla Firefox for additional adware or potential unwanted software. The adware may cause all kind of problems within Mozilla Firefox, adware may cause unwanted redirects, pop-ups or inline text advertisements with ads you do not want. These ads are used to promote sales or web-traffic to malicious websites or publisher in order to make revenue. These ads, pop-ups or redirects are caused by “adware” but adware is a name we give to a specific component that is installed against Mozilla Firefox. The true problem in Mozilla Firefox is often a malicious Browser Extension.

What is adware

Adware or advertising-supported software is any software application that displays advertisements while it’s running. These applications also contain codes that display these ads in a pop-up or pop-under window or in another window that appears on the computer screen. Adware helps recover development costs or maintain costs for the developers. Prices of the application to the user layer or even free Revenues software developers can generate profits and motivate them to continue to develop and maintain these applications. Some adware is also shareware, users can also opt for a “registered” version set that contain no ads (this is not the case in Browser Extensions for Mozilla Firefox)
Some adware programs also include a code that keeps track of a user’s personal infromation and passes it on to third parties without the approval or knowledge of the user. This is called spyware, or for most non-technical computer users a “virus”.

How to Remove Adware from Mozilla Firefox

the fastest and easiest way to remove adware from Mozilla Firefox is to reset Mozilla Firefox to default settings. Notice; the problem is not always solved when you reset Mozilla Firefox as the additional adware causing the problem often remains installed on the affected computer. If it doesn’t work and the problem remains, it is advised to scan your computer using the free software AdwCleaner and MalwareBytes Anti-Malware. Both AdwCleaner and MalwareBytes Anti-Malware are free to scan your computer and remove adware or any from of malware.

Let’s get started to reset Mozilla Firefox to default settings to check if the problem is fixed using resetting to default. If not, goto the next step AdwCleaner and MalwareBytes Anti-Malware to scan your computer for malware.

Reset Mozilla Firefox to default settings

  • Open Mozilla Firefox
  • Goto the orange Firefox button in the top left
  • Select Help > Troubleshooting information

firefox reset

  • Select Reset Firefox

firefox reset

  • Confirm Reset Firefox

firefox reset

  • Select Finish
  • Mozilla Firefox will automatically restart

Scan for additional adware with free software: AdwCleaner from XPlode

Is the problem solved ? If not run both AdwCleaner and MalwareBytes to check your computer for additional adware and malware and remove it for free.

Download AdwCleaner (Official link and direct-download)

Select AdwCleaner.exe with right mouse click and Run as Administrator

Remove adware from Mozilla Firefox  - AdwCleaner

If User Account Control asks you to allow AdwCleaner.exe to make changes to your computer, press Yes to continue.

Remove adware from Mozilla Firefox

Start scanning your computer for any malicious threats by selecting the Scan button, please wait.

Remove adware from Mozilla Firefox

AdwCleaner will now start scanning your computer. If AdwCleaner is done, it will display a list of malicious items detected, please uncheck the items you do not want to remove that might be detected as malicious.
If you have nothing to uncheck, continue to the removal process and select the Clean button.

Remove adware from Mozilla Firefox

AdwCleaner will display the following infromational alerts and starts rebooting the computer.

All programs will be closed in order to proceed correctly to the removal of the infections. Please save any work in progress and the click [OK]

If you have been brought to use AdwCleaner, it’s probably because your PC contained potentially unwanted programs or adware.
Potentially unwanted programs are often proposed during the installation of software. They may be present from of toolbars that sometimes change the homepage of the browser and slow internet browsing.
To avoid the installation of these programs polluting the computer, it is essential to follow these tips:

– Always download a program from the official link, or a trusted site
– When installing a program, do not click too fast [Next] without paying attention to Terms of Use and third-party programs available.
– If third-party programs are available (toolbars, etc) uncheck them.
– Enable detection of PUP (Potentially Unwanted Program) in your Antivirus.

AdwCleaner must restart the computer to complete the removal process. The report will be opened on the next reboot.

After the reboot a logfile will open. The logfile in Windows XP and Windows 7 will open once the desktop is started. To open the logfile in Windows 8 you need to switch to the Desktop modus by selecting windows key + d on your keyboard.
If you want to check the AdwCleaner log, you can find the report log in your system drive, Adwcleaner folder (for example: C:\adwcleaner)

Scan for additional malware with free software: Anti-Malware from MalwareBytes

Download MalwareBytes Anti-Malware

  • Install MalwareBytes Anti-Malware
  • Perfrom a Quick Scan
  • when scan is done, right click in the results and select “Check all items
  • Click “Remove Selected” button

Remove malware with MalwareBytes Anti-Malware Free

  • Reboot your computer
  • Enjoy a malware free computer.