How to remove System Alert! Add Extension pop up [Chrome, Firefox, IE, Edge]

How to remove System Alert! Add Extension popup

The adware is a form of malware that you might have difficulty in removing it from your PC. Luckily, you have found the effective System Alert! Add Extension pop ups removal steps in this article. Both the manual removal solution and the automatic removal method will be provided below and you can just select the one that best for you. If you’ve any questions or need help then type a comment below. Some of the steps below will require you to close the page. So, please read the step-by-step guide carefully, after that bookmark or print it for later reference.

How to delete System Alert! Add Extension pop ups without any software

If you perform exactly the step-by-step guide below you should be able to delete the System Alert! Add Extension redirect from the Chrome, Firefox, Microsoft Internet Explorer and MS Edge web browsers.

Delete suspicious software by using Windows Control Panel

We recommend that you start the system cleaning procedure by checking the list of installed programs and uninstall all unknown or suspicious applications. This is a very important step, as mentioned above, very often the malicious applications such as ‘ad supported’ software and browser hijackers may be bundled with free applications. Delete the unwanted software can get rid of the intrusive popup or web-browser redirect.

Carefully browse through the list of installed software and remove all programs which has the name similar to the System Alert! Add Extension web-page. We recommend to press ‘Installed programs’ and even sorts all installed software by date. When you have found anything suspicious that may be the browser hijacker, adware or potentially unwanted applications, then choose this program and press ‘Uninstall’ in the upper part of the window. If the suspicious program blocked from removal, then run Revo Uninstaller Freeware to fully remove it from your computer.

Clean up the web-browsers shortcuts

After installed, this ‘ad supported’ software may add an argument similar “http://site.address” into the Target property of the desktop shortcut for the Chrome, Firefox, Internet Explorer and Microsoft Edge. Due to this, every time you start the internet browser, it will display an annoying ad web-site.

Right click on the web-browser’s shortcut, click Properties option. On the Shortcut tab, locate the Target field. Click inside, you will see a vertical line – arrow pointer, move it (using -> arrow key on your keyboard) to the right as possible. You will see a text “http://site.address” that has been added here. Remove everything after .exe. An example, for Google Chrome you should remove everything after chrome.exe.

To save changes, click OK . You need to clean all web browser’s shortcuts. So, repeat this step for the Chrome, Firefox, Edge and Microsoft Internet Explorer.

Remove System Alert! Add Extension popups from Microsoft Internet Explorer

By resetting Internet Explorer internet browser you restore your internet browser settings to its default state. This is first when troubleshooting problems that might have been caused by adware which cause annoying System Alert! Add Extension pop-ups to appear.

First, start the Internet Explorer, press ) button. Next, click “Internet Options” as shown in the figure below.

In the “Internet Options” screen select the Advanced tab. Next, click Reset button. The Internet Explorer will display the Reset Internet Explorer settings prompt. Select the “Delete personal settings” check box and click Reset button.

You will now need to reboot your personal computer for the changes to take effect. It will get rid of System Alert! Add Extension pop-ups, disable malicious and ad-supported web-browser’s extensions and restore the IE’s settings like new tab, start page and search engine by default to default state.

Remove System Alert! Add Extension pop ups from Mozilla Firefox

If the Firefox settings such as start page, newtab and search engine by default have been replaced by the adware, then resetting it to the default state can help.

Press the Menu button (looks like three horizontal lines), and click the blue Help icon located at the bottom of the drop down menu as shown in the figure below.

A small menu will appear, click the “Troubleshooting Information”. On this page, click “Refresh Firefox” button like below.

Follow the onscreen procedure to return your FF internet browser settings to its original state.

Remove System Alert! Add Extension popup from Google Chrome

Use the Reset web-browser utility of the Google Chrome to reset all its settings like start page, new tab and search provider by default to original defaults. This is a very useful utility to use, in the case of internet browser redirects to intrusive ad web-pages such as System Alert! Add Extension.

First launch the Google Chrome. Next, press the button in the form of three horizontal stripes (). It will display the main menu. Further, click the option named “Settings”. Another way to display the Chrome’s settings – type chrome://settings in the web browser adress bar and press Enter.

The internet browser will open the settings screen. Scroll down to the bottom of the page and click the “Show advanced settings” link. Now scroll down until the “Reset settings” section is visible, as shown on the screen below and press the “Reset settings” button.

The Google Chrome will open the confirmation dialog box. You need to confirm your action, press the “Reset” button. The internet browser will start the procedure of cleaning. Once it is finished, the browser’s settings including new tab page, startpage and search engine by default back to the values that have been when the Chrome was first installed on your computer.

Remove unwanted Scheduled Tasks

Once installed, the ad-supported software can add a task in to the Windows Task Scheduler Library. Due to this, every time when you run your computer, it will display System Alert! Add Extension annoying page. So, you need to check the Task Scheduler Library and remove all malicious tasks that have been created by unwanted programs.

Press Windows and R keys on your keyboard together. It will show a prompt which titled with Run. In the text field, type “taskschd.msc” (without the quotes) and click OK. Task Scheduler window opens. In the left-hand side, click “Task Scheduler Library”, as shown below.

In the middle part you will see a list of installed tasks. Select the first task, its properties will be display just below automatically. Next, click the Actions tab. Necessary to look at the text which is written under Details. Found something such as “explorer.exe http://site.address” or “chrome.exe http://site.address” or “firefox.exe http://site.address”, then you need remove this task. If you are not sure that executes the task, then google it. If it is a component of the adware, then this task also should be removed.

Further press on it with the right mouse button and select Delete as shown in the figure below.

Repeat this step, if you have found a few tasks that have been created by unwanted software. Once is finished, close the Task Scheduler window.

Remove System Alert! Add Extension pop ups with free programs

In order to completely delete System Alert! Add Extension, you not only need to remove adware from your PC system, but also remove all its components in your machine including Windows registry entries. We recommend to download and use free removal utilities to automatically free your PC system of ad-supported software that created to redirect your internet browser to various ad sites like System Alert! Add Extension.

Use Zemana Anti-malware to get rid of System Alert! Add Extension pop ups

We suggest you to use the Zemana Anti-malware that are completely clean your PC of System Alert! Add Extension pop-up. Moreover, the tool will allow you to remove PUPs, malware, toolbars and browser hijackers that your computer can be infected too.

Download Zemana AntiMalware on your computer by clicking on the link below. Save it on your Windows desktop or in any other place.

Once downloading is finished, close all programs and windows on your machine. Double-click the set up file called Zemana.AntiMalware.Setup. If the “User Account Control” prompt pops up as shown on the image below, click the “Yes” button.

It will open the “Setup wizard” which will help you install Zemana Anti Malware on your personal computer. Follow the prompts and don’t make any changes to default settings.

Once installation is done successfully, Zemana Anti Malware will automatically start and you can see its main screen as shown below.

Now press the “Scan” button to start scanning your system for the ‘ad supported’ software that causes browsers to display intrusive System Alert! Add Extension pop ups. This process can take some time, so please be patient. When a threat is detected, the count of the security threats will change accordingly. Wait until the the checking is finished.

When it completes the scan, it will display a scan report. When you are ready, click “Next” button. The Zemana AntiMalware will begin to get rid of adware which cause annoying System Alert! Add Extension pop-ups to appear. When the clean up is finished, you may be prompted to reboot the system.

Run Malwarebytes to remove System Alert! Add Extension redirect

We recommend using the Malwarebytes Free that are completely clean your system of the ad supported software. The free tool is an advanced malicious software removal application created by (c) Malwarebytes lab. This program uses the world’s most popular anti-malware technology. It is able to help you get rid of undesired System Alert! Add Extension pop-ups from your browsers, PUPs, malware, browser hijackers, toolbars, ransomware and other security threats from your machine for free.

Download Malwarebytes on your PC from the link below. Save it on your Windows desktop or in any other place.

Once the download is finished, close all applications and windows on your personal computer. Double-click the install file called mb3-setup. If the “User Account Control” dialog box pops up as shown in the figure below, click the “Yes” button.

It will open the “Setup wizard” that will help you set up Malwarebytes on your computer. Follow the prompts and don’t make any changes to default settings.

Once install is complete successfully, click Finish button. Malwarebytes will automatically start and you can see its main screen as shown below.

Now click the “Scan Now” button to perform a system scan for the adware that causes intrusive System Alert! Add Extension pop-ups. A scan may take anywhere from 10 to 30 minutes, depending on the number of files on your system and the speed of your computer. While the tool is checking, you can see how many objects and files has already scanned.

After the scanning is finished, it’ll display a screen which contains a list of malicious software that has been found. You may move items to Quarantine (all selected by default) by simply click “Quarantine Selected” button. The Malwarebytes will begin to delete adware that causes intrusive System Alert! Add Extension pop-up. After that process is complete, you may be prompted to reboot the computer.

We suggest you look at the following video, which completely explains the process of using the Malwarebytes to delete adware, hijacker infection and other malicious software.

Double-check for potentially unwanted programs with AdwCleaner

AdwCleaner is a free removal tool that may be downloaded and use to get rid of ‘ad supported’ software which redirects your browser to annoying System Alert! Add Extension web site, hijackers, malware, PUPs, toolbars and other threats from your system. You may run this tool to find threats even if you have an antivirus or any other security program.

1. Download AdwCleaner by clicking on the link below.
   
   

   AdwCleaner download
   225264 downloads
   Version: 8.4.1
   Author: Xplode, MalwareBytes
   Category: Security tools
   Update: October 5, 2024
   
2. When the download is finished, double click the AdwCleaner icon. Once this utility is started, press “Scan” button It will scan through the whole system for the adware which designed to redirect your browser to various ad web-sites like System Alert! Add Extension. This task can take quite a while, so please be patient. While the application is scanning, you may see count of objects it has identified as threat.
3. Once finished, it will display a list of detected items. Review the scan results and then click “Clean” button. It will show a prompt, press “OK”.

These few simple steps are shown in detail in the following video guide.

How to stop System Alert! Add Extension popups

It is important to use ad-blocking software such as AdGuard to protect your machine from harmful web pages. Most security experts says that it’s okay to block popup. You should do so just to stay safe! And, of course, the AdGuard may to block System Alert! Add Extension and other undesired pages.

1. Download AdGuard program by clicking on the following link.
   

   Adguard download
   26629 downloads
   Version: 6.4
   Author: © Adguard
   Category: Security tools
   Update: November 15, 2018
   
2. After the downloading process is finished, launch the downloaded file. You will see the “Setup Wizard” program window. Follow the prompts.
3. When the installation is finished, click “Skip” to close the install program and use the default settings, or press “Get Started” to see an quick tutorial which will allow you get to know AdGuard better.
4. In most cases, the default settings are enough and you do not need to change anything. Each time, when you start your computer, AdGuard will launch automatically and stop pop-up, “System Alert! Add Extension” pop-ups, as well as other harmful or misleading web-pages. For an overview of all the features of the application, or to change its settings you can simply double-click on the icon named AdGuard, that can be found on your desktop.

How to System Alert! Add Extension popups get installed onto computer

The adware come bundled with various free programs, as a supplement, which is installed automatically. This is certainly not an honest way to get installed onto your computer. To avoid infecting of your PC system and side effects in the form of undesired System Alert! Add Extension pop-up, you should always carefully read the Terms of Use and the Software license. Additionally, always select Manual, Custom or Advanced installation mode. This allows you to disable the installation of unnecessary and often harmful software. Even if you uninstall the free applications from your computer, this adware will not be fully removed. This means that you should manually get rid of ad-supported software which redirects your web-browser to undesired System Alert! Add Extension web-site by follow the step-by-step guide above.

To sum up

Now your computer should be clean of the ad-supported software which cause intrusive System Alert! Add Extension popup to appear. Delete AdwCleaner. We suggest that you keep Zemana Anti-malware (to periodically scan your computer for new malware, browser hijackers and adware) and AdGuard (to help you stop unwanted pop ups and harmful pages). Moreover, to prevent adware, please stay clear of unknown and third party software, make sure that your antivirus program, turn on the option to detect PUPs (potentially unwanted programs).

If you need more help with System Alert! Add Extension pop ups related issues, go to our Spyware/Malware removal forum.