Remove Your Microsoft Computer Has Been Blocked Virus (Support Scam)

If you are randomly seeing a “Your Microsoft Computer Has Been Blocked” pop-up, asking you to call a support number, then your computer is infected with an adware program.

The Your Microsoft Computer Has Been Blocked 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.

The “Your Microsoft Computer Has Been Blocked” pop-up ads are caused by a malicious program, which is typically bundled with other software that you can download for free from the Internet. When the malicious program is installed, an “Your Microsoft Computer Has Been Blocked” alert will randomly pop-up. The “Your Microsoft Computer Has Been Blocked” pop-up will have this message:

*Your Windows (Microsoft) Computer has been blocked*
Windows System Alert!!
Call Microsoft At 1-888-243-3533!
You have been blocked from accessing the Internet.
Your e-mail passwords and other account passwords
Your Facebook ,skype,AIM,ICQ and other chat logs
Your private & family photos and other sensitive files
Your webcam could be accessed remotely by stalkers
It is Required that you call the number above and get your PC inspected before you continue using your internet, especially for Shopping or Banking.

Call Microsoft At 1-888-243-3533

As you can see, this program was created for the sole purpose of displaying fake Windows alerts in order to scare you into purchasing remote support services. If you are infected with this program, please ignore any alerts that are displayed and do not call the displayed number. To remove this Trojan and any related software, please use the removal guide below.

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 Your Microsoft Computer Has Been Blocked pop-ups (Virus Removal Guide)

This malware removal guide may appear overwhelming due to the amount of the steps and numerous programs that are being used. We have only written it this way to provide clear, detailed, and easy to understand instructions that anyone can use to remove malware for free.
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.

To remove Your Microsoft Computer Has Been Blocked pop-ups, follow these steps:
STEP 1: Use Zemana AntiMalware Portable to remove Your Microsoft Computer Has Been Blocked pop-ups
STEP 2: Scan and clean your computer with Malwarebytes Anti-Malware
STEP 3: Double-check for malicious programs with HitmanPro
(OPTIONAL) STEP 4: Reset your browser to default settings

This step is needed if the malicious “Your Microsoft Computer Has Been Blocked” pop-ups will not allow you to close your browser.

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.
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.
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: Use Zemana AntiMalware Portable to remove Your Microsoft Computer Has Been Blocked pop-ups

Zemana AntiMalware Portable is a free utility that will scan your computer for the Your Microsoft Computer Has Been Blocked browser hijacker and other malicious programs.

You can download Zemana AntiMalware Portable from the below link:
ZEMANA ANTIMALWARE PORTABLE DOWNLOAD LINK (This link will open a new web page from where you can download “Zemana AntiMalware Portable”)
Double-click on the file named “Zemana.AntiMalware.Portable” to perform a system scan with Zemana AntiMalware Free.

You may be presented with a User Account Control dialog asking you if you want to run this program. If this happens, you should click “Yes” to allow Zemana AntiMalware to run.
When Zemana AntiMalware will start, click on the “Scan” button to perform a system scan.
Zemana AntiMalware will now scan your computer for malicious programs. This process can take up to 10 minutes.
When Zemana has finished finished scanning it will show a screen that displays any malware that has been detected. To remove all the malicious files, click on the “Next” button.

Zemana AntiMalware will now start to remove all the malicious programs from your computer. When the process is complete, you can close Zemana AntiMalware and continue with the rest of the instructions.

STEP 2: Scan and clean your computer with Malwarebytes Anti-Malware

Malwarebytes Anti-Malware is a powerful on-demand scanner which should remove the Your Microsoft Computer Has Been Blocked pop-ups from your machine. It is important to note that Malwarebytes Anti-Malware will run alongside antivirus software without conflicts.

You can download download Malwarebytes Anti-Malware from the below link.
MALWAREBYTES ANTI-MALWARE DOWNLOAD LINK (This link open a new page from where you can download “Malwarebytes Anti-Malware”)
When Malwarebytes has finished downloading, double-click on the “mb3-setup-consumer” file to install Malwarebytes Anti-Malware on your computer.

You may be presented with an User Account Control pop-up asking if you want to allow Malwarebytes to make changes to your device. If this happens, you should click “Yes” to continue with the installation.
When the Malwarebytes installation begins, you will see the Malwarebytes Setup Wizard which will guide you through the installation process.

To install Malwarebytes Anti-Malware on your machine, keep following the prompts by clicking the “Next” button.
Once installed, Malwarebytes will automatically start and update the antivirus database. To start a system scan you can click on the “Scan Now” button.
Malwarebytes Anti-Malware will now start scanning your computer for malicious programs.
This process can take a few minutes, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.
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 has found, click on the “Quarantine Selected” button.
Malwarebytes Anti-Malware will now quarantine all the malicious files and registry keys that it has found.
To complete the malware removal process, Malwarebytes may ask you to restart your computer.

When the malware removal process is complete, you can close Malwarebytes Anti-Malware and continue with the rest of the instructions.

STEP 3: Double-check for malicious programs with HitmanPro

HitmanPro can find and remove malware, adware, bots, and other threats that even the best antivirus suite can oftentimes miss. HitmanPro is designed to run alongside your antivirus suite, firewall, and other security tools.

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”)
When HitmanPro has finished downloading, double-click on the “hitmanpro” file to install this program on your computer.

You may be presented with an User Account Control pop-up asking if you want to allow HitmanPro to make changes to your device. If this happens, you should click “Yes” to continue with the installation.
When the program starts you will be presented with the start screen as shown below. Now click on the Next button to continue with the scan process.
HitmanPro will now begin to scan your computer for malware.
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.
Click on the “Activate free license” button to begin the free 30 days trial, and remove all the malicious files from your computer.

When the process is complete, you can close HitmanPro and continue with the rest of the instructions.

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

If you are still experiencing issues with the Your Microsoft Computer Has Been Blocked 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

To remove Your Microsoft Computer Has Been Blocked, 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.

Click on Chrome’s main menu button, represented by three horizontal lines. When the drop-down menu appears, select the option labeled Settings.
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).
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.
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.

Internet Explorer

To remove Your Microsoft Computer Has Been Blocked, you can reset Internet Explorer settings to return them to the state they were in when Internet Explorer was first installed on your PC.

Open Internet Explorer, click on the “gear icon” in the upper right part of your browser, then click again on Internet Options.
In the “Internet Options” dialog box, click on the “Advanced” tab, then click on the “Reset” button.
In the “Reset Internet Explorer settings” section, select the “Delete personal settings” check box, then click on “Reset” button.
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.

Mozilla Firefox

If you’re having problems with the Your Microsoft Computer Has Been Blocked browser hijacker while using 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.

In the upper-right corner of the Firefox window, click the Firefox menu button, then click on the “Help” button.
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.
Click the “Refresh Firefox” button in the upper-right corner of the “Troubleshooting Information” page.
To continue, click on the “Refresh Firefox” button in the new confirmation window that opens.
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“.

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 Your Microsoft Computer Has Been Blocked pop-ups. If you are still experiencing problems while trying to remove Your Microsoft Computer Has Been Blocked pop-ups from your machine, you can ask for help in our Malware Removal Assistance forum.

Here are 10 basic security tips to help you avoid malware and protect your device:

To avoid potential dangers on the internet, it's important to follow these 10 basic safety rules. By doing so, you can protect yourself from many of the unpleasant surprises that can arise when using the web.