How to Delete the Mozilla Firefox Critical Error (Complete Guide)

What is Mozilla Firefox Critical Error?

Mozilla Firefox Critical Error is a false alert message that is under Cyber deals. It is displayed ban misleading websites. If you have seen this fake pop-up ad on your computer then you are sure to have installed an adware program on your computer. The presence of this nasty virus on your computer is not a good sign. Blocks all your security related to the system. For more details, you can read this article carefully. I am sure it will clear all your concept about Mozilla Firefox Critical Error and other related viruses. You can follow our removal steps to delete Mozilla Firefox Critical Error from the system.

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Mozilla Firefox Critical Error a Potentially Unwanted Program (PUP)

It’s fake technical support service that is created by cybercriminals to generate unethical online revenue and fool the innocent user. It hijacks your main browser immediately and modifies its default setting as well. Mozilla Firefox Critical Error changes the browser home page, new tab, and search engine, which can cause the browser to redirect to misleading or hacked sites. It displays some false security alerts or software update alert messages in your browser and suggests that you contact the technical support service. The scammer uses trusted companies LOGO and name on screen popup messages to make believe in his mind that it is a genuine program. They also provide a telephone number 8663682344 to get in touch directly with your technical experts.

Mozilla Firefox Critical Error is online scam belonging to the PUP category. Many users reported their unpleasant behavior. According to security experts, it targets its Windows PCs without permission. It spreads much adware on your computer using harmful malicious tricks. It is mainly coming from free software packages that you are downloaded from the internet. Its main purpose is to collect your confidential data such as IP and MAC address, URL search, geographic location, cookies, username, password, financial data and more as well. They can send all your personal data to hackers or unknown users that cause serious problems.

Mozilla Firefox Critical Error Distribution Methods

  • Freeware program: it installs itself as freeware packages or shareware program.
  • Downloaded media: If you downloaded movies, music, games, pdf, images and other files from the Internet then you can get many adware programs on your System as packages.
  • Infected external media drives: Can come from CD, DVD, flash drives, SD cards and other media drives. Malicious ads or pop-ups can be obtained from malicious ads or pop-up ads that can be viewed on your browser at any time.
  • File Sharing Network: If you are sharing files on the network, you may get many viruses on your computer. Can deliver to another computer as well.

How to Uninstall Mozilla Firefox Critical Error Automatically from Computer?


Remove Mozilla Firefox Critical Error From Your Windows Automatically

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Mac OS

Remove Mozilla Firefox Critical Error From Your Mac OS Automatically

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How to Uninstall Mozilla Firefox Critical Error Manually?

STEP 1: Start Your PC in Safe Mode With Networking

Windows 8/10

Booting Into Safe Mode on Windows 8 or 10

Numerous ways are there to get into the safe mode with networking option on your Windows computer system, but with Windows 8 & 10 OS. Few of those functions are need to be accessed with a little longer procedure. Well, here we are available to help you with the simplest way to access safe mode in Windows 8 or Windows 10 PC.

Here we will share the simplest method to access safe mode in networking.

1. Boot your PC to the login screen and then hold the SHIFT key, while holding it click on RESTART button.

win 8 homescreen

Windows 8 Screen

windows 10 homescreen

Windows 10 Screen

2. This will take you to the troubleshooting option screen where to enable the Safe Mode.


In other scenarios, there are options that you could not boot your login screen, here-

You could see another screen known as Recovery screen. To access this window you can hold the SHIFT key and keep tapping on F8 key. This will let you enter the advanced “recovery mode”. Here you can easily choose advanced repair options.

advance troubleshoot option win 10

Now go to the Start Up settings.

startup settings windows 10

There click on the Restart option available there.

restart your system

When the computer finally restarts, press the number that says Enable Safe Mode with Networking. Usually number 5 from the list.

enable safe mode with networking

Enter your admin login details and Enter Windows in Safe Mode with Networking.

Windows XP, Vista or 7

Restart Your PC and keep tapping on F8 key.

start pc in safemode

It will open and advanced menu option from there you need to choose the Safe Mode with Networking Option. You can easily make the selections with the help of arrow keys.

safe mode with networking

After choosing Safe Mode with Networking option. Click on Enter.

press enter

STEP 2: How to Show Hidden Files & Folders

Windows 8, 10

You need to Press Windows Key+E.

From the upcoming window you need to get to the View tab on the menu option.

Locate the Options icon and click on it.

locate hidden files in windows

A dialog box will get appear and you will need to click on “Show Hidden Files and Folders” option and click on Apply and then OK.

show hidden files

Windows 7

Press Windows Key + E.

From currently appeared window click on Organize option. (Usually appear on top left corner)

organize option win 7

Clicking on it will result in a drop-down list, select Folder & search options.

Go to the view tab of the next appeared Dialog box and click on “Show hidden files and folders”.

Click on Apply and then OK.

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STEP 3: Stop Mozilla Firefox Critical Error Related Processes From Task Manager

Windows XP, Vista, 7

To Open the Task Manager All you need to do is to press CTRL+ALT+DEL buttons simultaneously.

task manager


Or you can simply right-click on the taskbar and select task manager to open Task Manager on your screen.



Go to the processes tab and click on it. A list of running processes will appear on the screen.

end process


Select all those processes which are related with Mozilla Firefox Critical Error and end those immediately.

end process

Now go to the Service Tab and Stop all unknown services running there.

Windows 8, 10

In Windows 8 and Windows 10, you can simply open the Task Manager with the help of CTRL+SHIFT+ESC buttons.

task manager win8,10

There is another way to do the same thing and open the Task manager, is to right-click on the task bar of your desktop and select Task Manager from the list which appears.

task manager

Go to the Process Tab to see all the running processes which are associated with Mozilla Firefox Critical Error, after that click on End Process. It is important to end all unidentified processes to make your PC threat free.

end process

STEP 4: How to Remove Mozilla Firefox Critical Error From Your Windows Control Panel

Windows XP, Vista, 7

Navigate to the Start Menu and click on Control Panel option as shown in the Image below.

control panel

Next window will appear with the options which are available within the control panel where you need to select Uninstall a program option.

uninstall program option

Again next window will display you a list of programs which is installed on your PC. From here you need to uninstall all those kind of programs which are unknown/unidentified or associated with Mozilla Firefox Critical Error.

uninstall program option

Note – Although we have shown the images of Windows 7 here, but the options and navigation for Windows XP and Vista are the same.

Windows 8, 10

Click on the Search Box of your Windows Explorer and search for Control Panel.


Click on the Control Panel icon that appears and then click on Uninstall a Program from the Control Panel window that appears next.


Next window will get to uninstall any program option with a list of options. Uninstall all Mozilla Firefox Critical Error associated programs along with it if it appears.


STEP 5: How to Remove Mozilla Firefox Critical Error From Your Browser (If Appears)

If Mozilla Firefox Critical Error has stuck in your web browser and always keep appearing with your web browsing things then you need to check and remove it away from your browser. Few of the popular web browsers are described below with Mozilla Firefox Critical Error removal steps.

Internet Explorer

Open your IE browser and Click on the Tools button.


After that click on Manage Add-ons.


From left-side of next window that appears to click on Toolbars and Extensions and then select Mozilla Firefox Critical Error, if it appears there.


Also, remove all kind of BHOs which you don’t recognize or don’t know.

Click to remove those extensions or click on disable whichever is possible.

Restart your browser.

Google Chrome

Open your Google Chrome browser and click on the three horizontal lines icon available on Chrome menu on the top right corner of the browser toolbar.


Now choose the option to appear as Settings.


Go to the Extensions tab. (Click on it)


Locate Mozilla Firefox Critical Error extension and click on its trash icon and remove it from Google Chrome browser.


Remove all those extensions which you do not need or you do not know.


Then a confirmation box will appear which you have to confirm.

Mozilla Firefox

  • Open Mozilla Firefox browser and Go to Tools.


  • Click on Add-ons and Open Add-ons manager tab.


  • In the Add-ons manager tab click on Extensions Panel.
  • Remove all kinds of unknown extensions and also remove Mozilla Firefox Critical Error extension if available there.
  • Click to Disable or Remove Mozilla Firefox Critical Error.
  • Click to restart browser if it pops-up on your screen.
Manual removal of Mozilla Firefox Critical Error requires good technical skills and sound knowledge of system files and registries as well. If any important data is removed by accident then permanent system damage can be experienced. To prevent this troublesome effect – remove Mozilla Firefox Critical Error with trusted anti-malware scanner.

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