WARNING! Your Windows Has Been Blocked Scam
Written by Tomas Meskauskas on (updated)
What is WARNING! Your Windows Has Been Blocked?
"WARNING! Your Windows Has Been Blocked" is a fake error message displayed by a deceptive website. Research shows that users are redirected to this site by various potentially unwanted programs (PUPs) that infiltrate systems during installation of other software (the "bundling" method).
Furthermore, PUPs continually generate intrusive online advertisements and record user-system information relating to Internet browsing activity.
The "WARNING! Your Windows Has Been Blocked" error message states that the system has been infected and, for this reason, private details (logins/passwords, banking information, etc.) are at risk. The malware must be eliminated immediately. Victims are encouraged to call 'technical support' via a telephone number ("+1-888-616-9444") provided.
They then supposedly receive help in removing the malware. Bear in mind, however, that "WARNING! Your Windows Has Been Blocked" is fake and should be ignored. Its only purpose is to trick victims into calling and paying for technical support that is not required. Never call the telephone number above. This error message can removed simply by closing the web browser.
PUPs often deliver pop-up, coupon, banner, and other similar advertisements that conceal underlying content, thereby significantly diminishing the browsing experience. In addition, some redirect to malicious websites. Therefore, clicking these ads risks further computer infections.
PUPs also gather various information that might be personally identifiable. This information (website URLs visited, pages viewed, search queries, etc.) is shared with third parties who misuse personal data to generate revenue. This behavior can lead to serious privacy issues or even identity theft. We recommend that you uninstall all PUPs immediately.
The "WARNING! Your Windows Has Been Blocked" error shares many similarities with Microsoft System Security Alert, Windows Firewall Blocked The Internet, Ransomware Attack Warning Alert, and many others. All claim that the system is damaged in some way, however, none should be trusted - fake errors are designed only to generate revenue for the developers.
PUPs also have a similar purpose. By offering various 'useful features', they attempt to give the impression of legitimacy, however, rather than providing any significant value for regular users, PUPs cause unwanted redirects, deliver intrusive ads, and record user-system information.
How did adware install on my computer?
As mentioned above, PUPs are distributed using a deceptive marketing method called "bundling" - stealth installation of third party software with regular apps.
Developers are aware that users often rush the download/installation processes and skip steps. Therefore, they hide bundled programs within the "Custom" or "Advanced" settings. Skipping this section often leads to inadvertent installation of rogue software.
How to avoid installation of potentially unwanted applications?
PUPs are distributed using the "bundling" method. Therefore, never rush the download or installation processes. Select the "Custom/Advanced" settings, closely analyze each step, and decline offers to download/install additional apps.
Text presented within "WARNING! Your Windows Has Been Blocked" fake error:
WARNING!
Your Windows has been blocked due to suspicious activity! Please call Support Now! Call Toll-Free: +1-888-616-9444 (Toll Free) to find right solution.
WINDOWS FIREWALL BLOCKED THE INTERNET DUE TO SECURITY BREACH!
Please do not shut down or restart your computer as your personal data will be deleted forever and/or your banking/card details may be compromised. Call Microsoft Get Instant Help On Security Issues. Call On Our Toll Free Number. Instant Help Without Waiting Call +1-888-616-9444 (Toll Free) and Improve Your Computer’s Health Be Updated With Windows Our Professionals Will Keep You updated with latest software. Know About Safe Browser Learn More About Safe Browsing Get Info on: 1-888-616-9444 Call Microsoft 1-888-616-9444 (Toll Free)
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Quick menu:
- What is WARNING! Your Windows Has Been Blocked?
- STEP 1. Uninstall deceptive applications using Control Panel.
- STEP 2. Remove adware from Internet Explorer.
- STEP 3. Remove rogue extensions from Google Chrome.
- STEP 4. Remove potentially unwanted plug-ins from Mozilla Firefox.
- STEP 5. Remove rogue extension from Safari.
- STEP 6. Remove rogue plug-ins from Microsoft Edge.
Adware removal:
Windows 11 users:
Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.
Windows 10 users:
Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.
Windows 7 users:
Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.
macOS (OSX) users:
Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.
In the uninstall programs window, look for any suspicious/recently-installed applications, select these entries and click "Uninstall" or "Remove".
After uninstalling the potentially unwanted program, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove adware from Internet browsers:
Video showing how to remove potentially unwanted browser add-ons:
Remove malicious add-ons from Internet Explorer:
Click the "gear" icon 
(at the top right corner of Internet Explorer), select "Manage Add-ons". Look for any recently-installed suspicious browser extensions, select these entries and click "Remove".
Optional method:
If you continue to have problems with removal of the "warning! your windows has been blocked" virus, reset your Internet Explorer settings to default.
Windows XP users: Click Start, click Run, in the opened window type inetcpl.cpl In the opened window click the Advanced tab, then click Reset.
Windows Vista and Windows 7 users: Click the Windows logo, in the start search box type inetcpl.cpl and click enter. In the opened window click the Advanced tab, then click Reset.
Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.
In the opened window, select the Advanced tab.
Click the Reset button.
Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon 
(at the top right corner of Google Chrome), select "More tools" and click "Extensions". Locate all recently-installed suspicious browser add-ons, select these entries and click the trash can icon.
Optional method:
If you continue to have problems with removal of the "warning! your windows has been blocked" virus, reset your Google Chrome browser settings. Click the Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plug-ins from Mozilla Firefox:
Click the Firefox menu 
(at the top right corner of the main window), select "Add-ons". Click on "Extensions", in the opened window, remove all recently-installed suspicious browser plug-ins.
Optional method:
Computer users who have problems with "warning! your windows has been blocked" virus removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active, click Safari menu, and select Preferences....
In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.
Optional method:
Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge menu icon 
(at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.
Optional method:
If you continue to have problems with removal of the "warning! your windows has been blocked" virus, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Summary:
Commonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.
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