Remove “Important Security Message” pop-up virus (Support Scam)

If you are randomly seeing a “Important Security Message” pop-up, asking you to call a support number, then your computer is infected with an adware program.
Important Security Message virus

Important Security Message pop-ups

Important Security Message fake support
The Important Security Message alert is shown in such a way as to trick the user into thinking their computer has crashed or that a virus has been detected on the computer. It does this to try and scare the infected user into calling one of the listed numbers in order to receive support. In reality, though, they will only be greeted with people who are trying to sell them unneeded support contracts and services.

Microsoft does not send unsolicited email messages or make unsolicited phone calls to request personal or financial information or fix your computer. Treat all unsolicited phone calls or pop-ups with skepticism. Do not provide any personal information.

The “Important Security Message” pop-ups are caused by a malicious program, which is typically installed on your computer when you visit a malicious or compromised website, by other malware, or from spam emails. It can also get on your computer if you use torrents to download illegal copies of software or key generators.
After this malicious program has been installed on your computer, when your browse the Internet, you will see a pop-up message from a website that tells you to contact (the fake tech) support to fix an issue. The “Important Security Message” pop-up will have this message:

Dont Restart Your Computer
Windows Detected ALUREON Virus, The Infections detected, indicate some recent downloads on the computer which in turn has created problems on the computer.Call Toll Free : 0800-090-3285 and share this code SD333 to the Agent to Fix This.

Whatever you do, please do not call the phone number for support because it is not Microsoft’s but rather a group of scammers waiting to rob you of hundreds of dollars under false pretenses.
The below instructions are for Windows users, however we also have an Android guide and a Mac OS guide which should help clean up your device.

How to remove Important Security Message pop-ups (Removal Guide)

This page is a comprehensive guide which will remove Important Security Message pop-ups from Windows.
Please perform all the steps in the correct order. If you have any questions or doubt at any point, STOP and ask for our assistance.

This step is needed if the malicious “Important Security Message” pop-ups will not allow you to close your browser.

  1. Open Task Manager by right-clicking the taskbar and then clicking Start Task Manager. Alternatively to start the Windows Task Manager, you can press Ctrl+Alt+Del and click on Task Manager or simply press on Ctrl+Shift+Esc.
    Start Task Manager
  2. Scroll through the list till you see your web browser’s process and left-click on it once so it becomes highlighted. Once you have selected the browser’s process, click on the End Task button as show in the picture below.
    Close your browser process
  3. Your browser window should now be closed. The next time you open your browser, do not allow the browser to open the last opened page.

STEP 1: Scan your computer with Malwarebytes AdwCleaner

Malwarebytes AdwCleaner is a free utility that will scan your computer for adware programs that may have been installed without your knowledge.

  1. You can download Malwarebytes AdwCleaner from the below link.
    MALWAREBYTES ADWCLEANER DOWNLOAD LINK (This link will start the download of “Malwarebytes AdwCleaner” on your computer)
  2. Before starting Malwarebytes AdwCleaner, close your web browser, then double-click on the Malwarebytes AdwCleaner icon.
    Open Malwarebytes AdwCleaner
    If Windows prompts you as to whether or not you wish to run Malwarebytes AdwCleaner, please allow it to run.
    Windows asking permission to start Malwarebytes AdwCleaner
  3. When the Malwarebytes AdwCleaner program will open, click on the “Scan” button as shown below.
    Scan your computer with Malwarebytes AdwCleaner to remove adware
    Malwarebytes AdwCleaner will now start to search for adware and other malicious programs.
  4. To remove the malicious files that were detected in the previous step, please click on the “Clean” button.
    Malwarebytes AdwCleaner removing Adware
  5. Malwarebytes AdwCleaner will prompt you to save any open files or documents, as the program will need to reboot the computer to complete the cleaning process. Please do so, and then click on the “OK” button.
    Malwarebytes AdwCleaner finishing malware removal
    When your computer reboots and you are logged in, Malwarebytes AdwCleaner will automatically open a log file that contains the files, registry keys, and programs that were removed from your computer. Please review this log file and then close the notepad window.

STEP 2: Scan your computer with Malwarebytes Anti-Malware

Malwarebytes Anti-Malware is a powerful on-demand scanner which will remove the Important Security Message pop-ups from your machine. It is important to note that Malwarebytes Anti-Malware will run alongside antivirus software without conflicts.

  1. You can download download Malwarebytes Anti-Malware from the below link.
    MALWAREBYTES ANTI-MALWARE DOWNLOAD LINK (This link will open a new web page from where you can download “Malwarebytes Anti-Malware”)
  2. Once downloaded, close all programs, then double-click on the icon on your desktop named “mbam-setup” to start the installation of Malwarebytes Anti-Malware.
    Malwarebytes Anti-Malware Icon
    You may be presented with a User Account Control dialog asking you if you want to run this file. If this happens, you should click “Yes” to continue with the installation.
    Windows asking permission to install Malwarebytes
  3. When the installation begins, you will see the Malwarebytes Anti-Malware Setup Wizard which will guide you through the installation process.
    Malwarebytes Anti-Malware Setup Wizard
    To install Malwarebytes Anti-Malware on your machine, keep following the prompts by clicking the “Next” button.
    Malwarebytes Anti-Malware setup wizard
  4. Once installed, Malwarebytes Anti-Malware will automatically start and will update the antivirus database. To start a system scan you can click on the “Scan Now” button.
    Start a scan with Malwarebytes scan
  5. Malwarebytes Anti-Malware will now start scanning your computer for the Important Security Message malware. When Malwarebytes Anti-Malware is scanning it will look like the image below.
    Malwarebytes Anti-Malware scanning for malware
  6. When the scan has completed, you will be presented with a screen showing the malware infections that Malwarebytes Anti-Malware has detected. To remove the malicious programs that Malwarebytes Anti-malware has found, click on the “Remove Selected” button.
    To remove malware click on the Remove Selected button
  7. Malwarebytes Anti-Malware will now quarantine all the malicious files and registry keys that it has found. When removing the files, Malwarebytes Anti-Malware may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot your computer, please allow it to do so.

STEP 3: Scan your computer with HitmanPro

HitmanPro finds and removes malware, adware, bots, and other threats that even the best antivirus suite can oftentimes miss. It’s designed to run alongside your antivirus suite, firewall, and other security tools.

  1. You can download HitmanPro from the below link:
    HITMANPRO DOWNLOAD LINK (This link will open a new web page from where you can download “HitmanPro”)
  2. Double-click on the file named “HitmanPro.exe” (for 32-bit versions of Windows) or “HitmanPro_x64.exe” (for 64-bit versions of Windows).
    HitmanPro Icon
    Click on the “Next” button, to install HitmanPro on your computer.
    HitmanPro setup process
  3. HitmanPro will now begin to scan your computer for malware.
    HitmanPro scanning for Important Security Message virus
  4. When it has finished it will display a list of all the malware that the program found as shown in the image below. Click on the “Next” button, to remove malware.
    HitmanPro detected malware
  5. Click on the “Activate free license” button to begin the free 30 days trial, and remove all the malicious files from your computer.
    Activate HitmanPro to remove malware

(OPTIONAL) STEP 4: Reset your browser to default settings

If you are still experiencing issues with the Important Security Message pop-ups in Internet Explorer, Firefox or Chrome, we will need to reset your browser to its default settings.
This step should be performed only if your issues have not been solved by the previous steps.

Google Chrome


Google Chrome has an option that will reset itself to its default settings. Resetting your browser settings will reset the unwanted changes caused by installing other programmes. However, your saved bookmarks and passwords will not be cleared or changed.

  1. Click on Chrome’s main menu button, represented by three horizontal lines. When the drop-down menu appears, select the option labeled Settings.
    Google Chrome Settings button
  2. Chrome’s Settings should now be displayed in a new tab or window, depending on your configuration. Next, scroll to the bottom of the page and click on the Show advanced settings link (as seen in the below example).
    Google Chrome Advanced Settings
  3. Chrome’s advanced Settings should now be displayed. Scroll down until the Reset browser settings section is visible, as shown in the example below. Next, click on the Reset browser settings button.
    Google Chrome Reset button
  4. A confirmation dialog should now be displayed, detailing the components that will be restored to their default state should you continue on with the reset process. To complete the restoration process, click on the Reset button.
    Reset Google Chrome settings

Internet Explorer


You can reset Internet Explorer settings to return them to the state they were in when Internet Explorer was first installed on your PC.

  1. Open Internet Explorer, click on the “gear iconIE Icon Gear in the upper right part of your browser, then click again on Internet Options.
    [Image: Internet Options in Internet Explorer]
  2. In the “Internet Options” dialog box, click on the “Advanced” tab, then click on the “Reset” button.
    [Image: Reset Internet Explorer]
  3. In the “Reset Internet Explorer settings” section, select the “Delete personal settings” check box, then click on “Reset” button.
    [Image: Reset Internet Explorer to its default settings]
  4. When Internet Explorer has completed its task, click on the “Close” button in the confirmation dialogue box. You will now  need to close your browser, and then you can open Internet Explorer again.
    [Image Reset Internet Explorer settings]

Mozilla Firefox


If you’re having problems with Firefox, resetting it can help. The reset feature fixes many issues by restoring Firefox to its factory default state while saving your essential information like bookmarks, passwords, web form auto-fill information, browsing history and open tabs.

  1. In the upper-right corner of the Firefox window, click the Firefox menu button ([Image: Firefox Menu button]), then click on the “Help” ([Image: Firefox Help button]) button.
    Firefox Help button
  2. From the Help menu, choose Troubleshooting Information.
    If you’re unable to access the Help menu, type about:support in your address bar to bring up the Troubleshooting information page.
    Troubleshooting Information in Firefox
  3. Click the “Refresh Firefox” button in the upper-right corner of the “Troubleshooting Information” page.
    Refresh Firefox button
  4. To continue, click on the “Refresh Firefox” button in the new confirmation window that opens.
    Reset Firefox settings to default
  5. Firefox will close itself and will revert to its default settings. When it’s done, a window will list the information that was imported. Click on the “Finish“.

Note: Your old Firefox profile will be placed on your desktop in a folder named “Old Firefox Data“. If the reset didn’t fix your problem you can restore some of the information not saved by copying files to the new profile that was created. If you don’t need this folder any longer, you should delete it as it contains sensitive information.


Your computer should now be free of the Important Security Message redirect. You can remove AdwCleaner from your machine, however we recommend that you keep Malwarebytes Anti-Malware and HitmanPro installed, and perform regular computer scans.

If you are still experiencing problems while trying to remove Important Security Message pop-ups from your machine, please do one of the following:

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STELIAN PILICI
I've started MalwareTips in 2010 to help people solve their computer problems. My area of expertise includes malware removal and computer forensics. I'm active in the various online anti-malware communities where I do researches for new malware threats as they are released.

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