Remove redirects to the "Windows Antivirus - Critical Alert" scam

Also Known As: "Windows Antivirus - Critical Alert" virus
Distribution: Low
Damage level: Medium

"Windows Antivirus - Critical Alert" removal instructions

What is "Windows Antivirus - Critical Alert"?

"Windows Antivirus - Critical Alert" is categorized as tech-support scam. Scams of this type attempt to trick people into believing that their computers and personal details are at risk, and they encourage them to call the telephone number provided. Typically, scammers promote these so-called 'services' through various untrustworthy web pages, which are often opened by potentially unwanted applications (PUAs) installed on the browser or operating system. If this scam is opened through your browser, we recommend that you ignore it and check for PUAs that might be causing the problem.

Windows Antivirus - Critical Alert scam

The "Windows Antivirus - Critical Alert" scam runs a fake scan and inform users that their data is at high risk. According to this web page, someone is trying to steal banking information, credit card details, and credentials of other accounts. To avoid problems, visitors are encouraged to call the "+1 (888) 982-8105" telephone number, which will supposedly allow them to contact someone from Microsoft. In fact, calling this number leads to contacting the scammers who designed this tech-support scam. Additionally, this page displays a pop-up window stating that another page, which was apparently visited earlier, was infected and placed the computer at risk. It also encourages users to call the telephone number. Furthermore, this page starts a countdown timer that, once expired, supposedly starts a "Hard Drive safety delete". In summary, this scam tricks people into calling scammers immediately and into believing that they will lose their data and have their personal details stolen unless they take action within five minutes of the page being opened. The information on these pages should never be trusted. If a browser opens a page of this type, ignore the information and close it. Note, however, that some scam sites prevent visitors from closing them. In these cases, they can be closed by ending the browser process via Task Manager. Note also that restoring the previously closed session will return you to the scam page (so do NOT restore the closed browsing session). If the browser opens the "Windows Antivirus - Critical Alert" scam in a full-screen mode, it can be closed by pressing the "Esc" key.

There are many cases whereby web pages of this type are opened by PUAs. If installed, PUAs also collect browsing data and feed users with unwanted ads. They record details such as users' IP addresses, geolocations, URLs of visited websites, entered search queries, and other similar data. Developers share the data with other parties (potentially, cyber criminals) who misuse it to generate revenue. Having PUAs installed can thus lead to problems with privacy, browsing safety, etc. Additionally, apps of this type often serve intrusive ads such as coupons, banners, pop-ups, surveys and so on. Typically, people who click the ads are redirected to untrustworthy web pages, or they cause download and installation of other unwanted applications.

Threat Summary:
Name "Windows Antivirus - Critical Alert" virus
Threat Type Phishing, Scam, Social Engineering, Fraud
Fake Claim The tech-support scam claims that the system is infected and that the user's personal data (account credentials, stored photos, etc.) is at risk.
Tech Support Scammer Phone Number +1-(888) 982-8105
Related Domain adultsexvedios[.]site
Detection Names Full List Of Detections (VirusTotal)
Serving IP Address (adultsexvedios[.]site) 167.71.131.37
Symptoms Fake error messages, fake system warnings, pop-up errors, hoax computer scan.
Distribution methods Compromised websites, rogue online pop-up ads, potentially unwanted applications.
Damage Loss of sensitive private information, monetary loss, identity theft, possible malware infections.
Removal

To eliminate Windows Antivirus - Critical Alert virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

There are many pages that are designed by scammers. Some examples include "Hard Drive Safety Delete", "Virus Support Alert", and "Windows Is Not Activated". They commonly display "tech-support" numbers that, if called, connect people with scammers. Their main goal is to extort money from people by selling unnecessary software or tricking them into paying for online 'technical support'. None of these pages are official or can be trusted. PUAs that open pages of this type are usually disguised as legitimate, useful tools, however, they simply cause problems by opening dubious web pages, collecting data, and displaying ads.

How did potentially unwanted applications install on my computer?

Unwanted downloads/installations usually occur when people click intrusive ads or when they download and install (usually free) software without paying attention to the setup details. When clicked, many deceptive ads run scripts that download and install PUAs or even malware. In other cases, PUAs are installed when developers use the "bundling" method to trick them. They bundle (include) PUAs in the set-ups of other software, however, this information is usually hidden in options such as "Custom", "Advanced", and other similar parts. By leaving these settings unchecked and unchanged, many people allow PUAs to be downloaded and installed with other, regular software.

How to avoid installation of potentially unwanted applications?

Download software from official and trustworthy websites. Do not trust other sources such as third party downloaders, torrent clients, eMule (and other Peer-to-Peer networks), unofficial websites, or tools such as third party installers. All downloads and installations should be performed correctly: check all available "Custom", "Advanced", and other similar parts and deselect any bundled PUAs. Do not trust intrusive ads, especially if they are displayed on dubious websites. These often redirect to potentially malicious pages or cause unwanted downloads or installations. If a browser causes unwanted redirects or displays intrusive ads regularly, it is possible that this is due to a PUA (extension, plug-in, or add-on) installed on the default browser. All unwanted, unknown browser apps should be uninstalled immediately. You are also advised to remove suspicious, unwanted programs installed on the operating system. If your computer is already infected with PUAs, we recommend running a scan with Spyhunter for Windows to automatically eliminate them.

The appearance of "Windows Antivirus - Critical Alert" pop-up (GIF):

Windows Antivirus - Critical Alert scam gif

Text presented in "Windows Antivirus - Critical Alert" scam:

Someone Is Trying To Steal Your Banking Details, Credit Card Details & Other Logins. Please Call Microsoft At +1-(888) 982-8105 (Toll Free) Immediately To Prevent Data Loss.
Hard Drive safety delete in starting in 5:00
Your Data is at high risk
To immediately rectify issue and prevent data loss

Call Support +1-(888) 982-8105 (Toll Free)


Windows Antivirus - Critical Alert
Alert: The page you tried to visit turns out to be infected and your computer is at risk.
It is possible that we disable your internet connection to prevent the spread of the virus on our network.

Disinfection of the computer is however possible: Call for Help +1-(888) 982-8105

Instant automatic removal of Windows Antivirus - Critical Alert virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Windows Antivirus - Critical Alert virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Removal of potentially unwanted applications:

Windows 7 users:

Accessing Programs and Features (uninstall) in Windows 7

Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.

Windows XP users:

Accessing Add or Remove Programs in Windows XP

Click Start, choose Settings and click Control Panel. Locate and click Add or Remove Programs.

Windows 10 and Windows 8 users:

Accessing Programs and Features (uninstall) in Windows 8

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.

Mac OSX users:

Uninstall app in OSX (Mac)

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.

PUAs uninstall via Control Panel

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 application, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove rogue extensions from Internet browsers:

Video showing how to remove potentially unwanted browser add-ons:

Internet Explorer logoRemove malicious add-ons from Internet Explorer:

Removing rogue extensions from Internet Explorer step 1

Click the "gear" icon Internet Explorer options 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".

Removing rogue extensions from Internet Explorer step 2

Optional method:

If you continue to have problems with removal of the "windows antivirus - critical alert" 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.

Resetting Internet Explorer settings to default on Windows XP

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.

Resetting Internet Explorer settings to default on Windows 7

Windows 8 users: Open Internet Explorer and click the gear icon. Select Internet Options.

Reseting Internet Explorer settings to default in Windows 8 - accessing

In the opened window, select the Advanced tab.

Resetting Internet Explorer settings to default on Windows 8 - Internet options advanced tab

Click the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - click the Reset button in the Internet options advanced tab

Confirm that you wish to reset Internet Explorer settings to default by clicking the Reset button.

Resetting Internet Explorer settings to default on Windows 8 - confirm settings reset to default by clicking the reset button

Google Chrome logoRemove malicious extensions from Google Chrome:

Removing rogue extensions from Google Chrome step 1

Click the Chrome menu icon Google 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 and remove them.

Removing rogue extensions from Google Chrome step 2

Optional method:

If you continue to have problems with removal of the "windows antivirus - critical alert" virus, reset your Google Chrome browser settings. Click the Chrome menu icon Google 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.

Google Chrome settings reset step 1

After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.

Google Chrome settings reset step 2

In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.

Google Chrome settings reset step 3

Mozilla Firefox logoRemove malicious plug-ins from Mozilla Firefox:

Removing rogue extensions from Mozilla Firefox step 1

Click the Firefox menu firefox menu icon (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.

Removing rogue extensions from Mozilla Firefox step 2

Optional method:

Computer users who have problems with "windows antivirus - critical alert" virus removal can reset their Mozilla Firefox settings.

Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, firefox menu icon in the opened menu, click Help.

Accessing settings (Reset Firefox to default settings step 1)

Select Troubleshooting Information.

Accessing Troubleshooting Information (Reset Firefox to default settings step 2)

In the opened window, click the Refresh Firefox button.

Clicking on Refresh Firefox button (Reset Firefox to default settings step 3)

In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.

Confirm your want to reset Firefox settings to default (Reset Firefox to default settings step 4)

safari browser logoRemove malicious extensions from Safari:

removing adware from safari step 1 - accessing preferences

Make sure your Safari browser is active, click Safari menu, and select Preferences....

removing adware from safari step 2 - removing extensions

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...

resetting safari step 1

In the opened window select all history and click the Clear History button.

resetting safari step 2

Microsoft Edge logoRemove malicious add-ons from Microsoft Edge:

Removing browser hijackers from Microsoft Edge step 1

Click the three horizontal dots icon edge more icon (at the top right corner of Microsoft Edge), select "Extensions". Look for any recently-installed suspicious extensions, right click your mouse on these entries and click "Uninstall".

Removing browser hijackers from Microsoft Edge step 2

Optional method:

Click the three horizontal dots icon edge more icon (at the top right corner of Microsoft Edge), and select Settings.

Resetting Microsoft Edge settings step 1

In the opened tab, click the "Choose what to clear" button.

Resetting Microsoft Edge settings step 2

Click Show more and select everything, and then click the "Clear" button.

Resetting Microsoft Edge settings step 3

  • If this didn't help, please follow these alternative instructions explaining how to reset Microsoft Edge browser.

Summary:

declining installation of adware while downloading free software sampleCommonly, 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.

Removal assistance:
If you are experiencing problems while trying to remove "windows antivirus - critical alert" virus from your computer, please ask for assistance in our malware support forum.

Post a comment:
If you have additional information on "windows antivirus - critical alert" virus or it's removal please share your knowledge in the comments section below.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

Our malware removal guides are free. However, if you want to support us you can send us a donation.

Removal Instructions in other languages
Malware activity

Global virus and spyware activity level today:

Medium threat activity
Medium

Increased attack rate of infections detected within the last 24 hours.

QR Code
Windows Antivirus - Critical Alert virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of "Windows Antivirus - Critical Alert" virus on your mobile device.
We Recommend:

Get rid of Windows Antivirus - Critical Alert virus today:

▼ REMOVE IT NOW with Spyhunter

Platform: Windows

Editors' Rating for Spyhunter:
Editors ratingOutstanding!

[Back to Top]

Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.