Remove “Your windows (Microsoft) computer has been blocked” fake warning

By | Posted on December 23, 2015 | Updated on August 25, 2016

“Your windows (Microsoft) computer has been blocked” is a pop-up that purported to be a valid warning of legitimate program. In reality, this is a fake web site that tries to deceive computer users. It issues fake warnings and alerts prompting visitors to call a number and seek for technical support. Be aware that programs and services offered are not free. “Your windows (Microsoft) computer has been blocked” was created to scam computer users and steal money through fraudulent online transactions.

When your browser is redirected to “Your windows (Microsoft) computer has been blocked”, or pop-up appears as you browse the Internet, it may mean that your computer is infected with malicious code. In contrary, your PC may be clean and the appearance of “Your windows (Microsoft) computer has been blocked” pop-ups was just caused by an infected web site you are viewing. Remember that site “Your windows (Microsoft) computer has been blocked” is malicious. Thus, you must avoid it to keep your computer safe and away from adware or malware threats.

If “Your windows (Microsoft) computer has been blocked” files are executed, you may instantly acquire unwanted codes that may cause changes on the computer. Moreover, add-ons and extensions brought by this site can do modifications on the browser that causes pop-up ads, redirects, home page hijacking, and other unsolicited actions. On the other hand, if you call the provided number, your phone account will be billed with unexpected amount. The message you will see from this malicious pop-up reads:

Your windows (Microsoft) computer has been blocked
Windows System Alert!.
System has been infected due to unexpected error! Please contact Microsoft Support 0-800-011-9634 immediately to unblock your computer.

In order to prevent “Your windows (Microsoft) computer has been blocked” attack, you must take extra caution when visiting web sites particularly unknown ones. As much as possible, avoid downloading unfamiliar freeware or shareware that are commonly the carrier or adware and other malicious programs.

Your windows (Microsoft) computer has been blocked

To completely remove “Your windows (Microsoft) computer has been blocked” adware and stop the pop-up ads, you may have to scan the PC with legitimate security tools and virus removers. Removing any relevant software also helps eliminate unwanted items on the computer.

“Your windows (Microsoft) computer has been blocked” Removal Guide

Stage 1: Remove Rootkit and Virus from the Computer

This rootkit and virus removal tool is free and easy to use. It scans, detects and removes any rootkit as well as malware that are hidden on the computer.

1. Download Sophos Virus Removal Tool from the link provided. Save the file to your Desktop so that we can access the file easily.
Sophos Virus Removal Tool Download Link (this will open a new window)

2. Once the download completes, double-click the file to install the program on the computer. It will update the database once installations has finished. Internet connection is required at this point.

3. After downloading necessary updates, Sophos Virus Removal Tool displays the welcome screen.


4. Click on Start Scanning button to begin checking the system for presence of rootkit and virus.

Stage 2: Scan and Delete Adware with AdwCleaner

1. Download the tool called AdwCleaner from the location stated below.
– Click here to download AdwCleaner (this will open a new window)

2. Once you have completed the download, please close all running programs on the computer.

3. Locate the file and double-click on adwcleaner_Ver.exe to start running the tool. Then, click on Scan button.


4. It searches for presence of harmful programs, plug-ins, add-ons, or any data that were found malicious and linked to “Your windows (Microsoft) computer has been blocked”. You need to Clean all items detected by this tool.

5. Once scan is done, the tool may need to reboot your computer to finalize the cleaning process.

6. After reboot, AdwCleaner will display the log file of the recent scan.

Stage 3: Remove Adware Add-on linked to “Your windows (Microsoft) computer has been blocked” and Cleanup the Browser

After the previous scans, you may have deleted “Your windows (Microsoft) computer has been blocked” from the affected browser. This next step will ensure that no more module of adware will be left on the browser. This free tool scans and checks the browser for unwanted add-on and extension, and if found, Avast Browser Cleanup will give you a report and suggestion.

1. Download this free tool and save it to your desktop.
Avast Browser Cleanup Download Link (this will open in a new window)

2. Please install the program. Start the process by double-clicking on the executable file avast-browser-cleanup-sfx.exe.

3. When run, Avast Browser Cleanup performs a test on the browser. If unwanted entries were found, it will display a button ‘Remove all add-ons listed below and cleanup browser.’ You may remove all or delete one entry at a time.

Avast Browser Scanner

4. Avast Browser Cleanup will confirm before it permanently deletes the add-on. Please click Yes to proceed with the removal of “Your windows (Microsoft) computer has been blocked” on the affected browser.

Option: Alternative Method to Clean Up Internet Browser

Cleaning your internet browser from clutter and unwanted add-on/extension is a must when dealing with “Your windows (Microsoft) computer has been blocked”. The procedure below discuss on resetting various browsers to its default state.

Remove “Your windows (Microsoft) computer has been blocked” from Google Chrome

Resetting Google Chrome to default settings is helpful in deleting hard-to-remove extension such as from “Your windows (Microsoft) computer has been blocked”. This method is highly advisable to perform if you have difficulty in removing unwanted extension.

1. Open Google Chrome application.

2. In the address bar please type this string: chrome://settings/ and then, press Enter on keyboard.

3. Scroll down, then click Show advanced settings

4. Scroll to the bottom of the page until you see Reset Settings section.

5. Click on Reset Settings button. If it prompts for confirmation, please click Reset to proceed.

Google Chrome Reset

This function will reset your home page, new tab page, search engine, and other areas affected by “Your windows (Microsoft) computer has been blocked”. Unwanted extensions will also be removed from the browser. This will not affect your bookmarks, history, and other saved data. You may also download Chrome Cleanup Tool from this page. A stand-alone reset tool from Google Chrome but with more advanced Adware scanner feature.

Reset Mozilla Firefox to Default

This section describes how to remove unwanted extension from Firefox that may be related to “Your windows (Microsoft) computer has been blocked”.. This process can fix many browser issues by restoring Firefox to factory settings without affecting your essential information (bookmarks, browsing history, passwords, and Internet cookies) on the browser. If you desire to remove only specific extension, please see manual removal of add-on from Firefox.

1. Navigate to Firefox menu at the top of the browser and access the Help area. Click on Troubleshooting Information.

2. A new tab will appear. You will notice a section on upper-right corner of the screen stating Reset Firefox to its default state. Click the Reset Firefox button.

FF Reset

3. If confirmation window appears, click Reset Firefox to continue.

4. Firefox browser will close and start the resetting process. When done, it will display a list of restored data. “Your windows (Microsoft) computer has been blocked” should be gone by now. Click Finish to open a fresh version of Firefox.

Restore Internet Explorer to Default Settings

1. Open Internet Explorer and navigate to top menu. Click Tools, and then Internet Options.

2. Select Advanced tab on Internet Options window.

IE Reset

3. On lower part of the window, under Reset Internet Explorer Settings area, click the Reset button. Please see image for reference.

Your data like favorites, bookmark, and history will remain in the browser. However, this process may delete add-ons by “Your windows (Microsoft) computer has been blocked” and other unknown objects. If you prefer to carry out the procedure manually, please see add-on removal from Internet Explorer.

Stage 4: Cleanup Internet Browser’s Shortcut Link

One method that starts your home page to unwanted webpage is by integrating the link to browser’s shortcut link. On this section, we will discuss the proper removal of unwanted entries on shortcut link.

1. Locate the shortcut icon for affected Internet browser and right-click on it.

2. Select Properties from the drop-down list. This method opens Internet Browser Properties window.

Chrome Properties

3. Under Target field, you will need to remove extra path pointing to the web address that issues “Your windows (Microsoft) computer has been blocked” warning. Please refer to image below.

Malicious Shortcut Link

4. Do the same thing for the rest of Internet browsers that were compromised with malware.

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8 thoughts on “Remove “Your windows (Microsoft) computer has been blocked” fake warning

  1. John Stout

    I ran all three of these in the exact order when this malware infected my Microsoft edge browser with no luck. I have ran multiple virus removal programs and they all come back clean, I have also searched my C drive and windows directory and found no weird files associated with this malware. When I open Microsoft edge it still starts up this malware every time with audio. Chrome works fine but I want to clear everything from my computer, any more suggestions, is there a way to reset Mircosoft edge, I thought it was built into Windows 10 so there is no way to remove and reinstall?

  2. Ronda Hannel

    I got this last night but my Chromebook doesn’t have Microsoft products installed on it. I will try running these tonight, if that doesn’t work, not sure what’s next. Advice?

  3. Alex Hart

    I got this yesterday on my HP laptop. Being naive and not thinking it through, I called the number because I literally could not do anything on the computer, even turn it off. Everything seemed legit until they wanted to charge me $350 to repair the computer and remove the malware. I hung up and will try this.

  4. Mark

    ”Be aware that programs and services offered are not free. ”

    But of course, as always the phone number to call is!!!

    Because they want to capture your phone number even if blocked!!!!!

  5. Wil

    Hello. What if I can’t close the warning? What should I do ? Thanks

  6. StellaGian

    @Wil, to close the warning, you have to end the application or browser. To do this, press CTRL+ALT+DEL on keyboard. Click on Start Task Manager. Select the application (IE, Chrome, Firefox). Then, click on End Task.

  7. Nyx

    I got this today and it’s not letting me do anything. I don’t have any money so I can’t exactly purchase a virus scanner

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