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Remove Critical System Failure Scam


Critical System Failure is a message box that pops up like an error alert. Know that the alert is a fake and points to a tech support scam. The 855-616-6772 phone number is used for contacting the scammers. Another name for the message is “Compromised Windows Security.” People running the scheme could call you themselves. You could have got the fake messages from a software placed on your PC. That software could have ended up on your computer from another program, or a website could have injected it. You should read the article to the end and find out how you can stop the fake alerts.

Threat Summary

NameCritical System Failure
TypeTech Support Scam
Short DescriptionThe tech support scam is built upon scare tactics and tries to make you to call the phone number. It wants you to believe that your computer has issues.
SymptomsPop-up boxes will constantly appear and show fake critical alerts that look like they are from the Windows OS. A phone number is provided to fix the supposed problem.
Distribution MethodFreeware Installers, Suspicious Sites, Browser Redirects
Detection Tool See If Your System Has Been Affected by Critical System Failure


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User ExperienceJoin Our Forum to Discuss Critical System Failure.

Critical System Failure – Distribution Methods

This tech support scam has more distribution methods. One of the common methods to get the scam on your system is if you are browsing suspicious websites that you do not know. In this way, the files associated with the scam get injected onto your personal computer. Advertisements and redirects which are connected to suspicious websites can land you a PUP (potentially unwanted program) that spams messages of the scam. You will see the 855-616-6772 number in every related message.

The undesirable software which causes the 855-616-6772 phone number to appear on your computer with a fake Critical System Failure message can come with third-party installers. Freeware and bundled programs often contain such packages. The installer packages could have been configured to add extra components with the default installation. If you want to prevent the setup from installing them, you should search for an Advanced or Custom settings menu, so you can deselect the extra content.

Critical System Failure – Details

Critical System Failure is a message box that pops up like an error alert. In actuality, this is a technical support scam, and its purpose is to try and trick people into calling a provided phone number. It is also known as Compromised Windows Security. The 855-616-6772 phone number is used as a contact for the cyber crooks behind this scam.

Lots of users continue to fall, victim of such scams, despite that they are obvious in the eyes of tech savvy people. Also, the logo used for the scam in the fake alert message is depicted as a shield with Microsoft’s logo, instead of a red shield with an “X” inside it or a yellow triangle.

You can view the fake pop-up message in the picture below:

That message is not excluded from opening up inside a browser application and lock the page. The current message box that pops up on your Windows desktop is not reported to lock the screen, although it might appear on top of other windows. The Critical System Failure fake alert is blunt and just wants you to call the 855-616-6772 phone number and fix the supposed critical error on your computer machine.

The pop-up message reads the following:

Critical System Failure
Compromised Website Security
Please Call Technical Support 855-616-6772
Computer ID: 3257-6989
Response Code:

As Critical System Failure is giving you very small detail about the problem, this might look less obvious of a scam if you are not aware that Microsoft does not have a telephone support line. As there is no specific error given, no lock-screen and no voice speaking that there is a problem, some people may be more inclined to believe that the scam is a real thing.

In case you find yourself seeing pop-up windows showing the Critical System Failure error message or you have received a telephone call from the cybercriminals, you might be asked to do certain things. The two things which the con artists usually ask is not to tamper with the message and to provide them with your personal information. They might say something about whether the Windows system you are using is licensed, and to give them information but you to confirm it.

Do NOT provide any information and especially do not call the phone number in the first place. If there was a Critical System Failure, your PC wouldn’t even turn on and show an interface, but you would read that message on a Blue Screen. Aside from that, even a short call can cost you a small fortune.

Cyber crooks will look for ways to stall and if they do not gather information from you to at least gain money from the call’s impulses. They will lie to you that they are certified Microsoft employees or well-renowned partners of the company. Any information they can extract from you might be sold on the black market, and in some cases that can lead to identity theft.

Websites connected to the fraudulent telephone number might exist, trying to mimic Microsoft’s official website, too.

Remove Critical System Failure

To remove the Critical System Failure pop-ups also known with the 855-616-6772 number manually from your PC, follow the step-by-step removal instructions given below. If the manual removal does not get rid of the scam and pop-ups effectively, you should search for and remove any leftover items with an advanced anti-malware tool. Such software will keep your system secure in the future.


Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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