How to remove Critical System Failure alert

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What is Critical System Failure?

Critical System Failure pop-up is a scam that imitates a Windows alert that attempts to persuade you to believe that your system has irreversible problems. The message doesn’t say though what kind of error did occur and as the only method of problem solving offers a phone number of technical support. The message appears on top of all applications and windows, and can’t be close without entering a response code. Since a victim of the scam doesn’t have even a slightest idea what this code is like, they, maybe after some reboots, dial the number.

Critical System Failure pop-up

After that a victim is connected to a member of a fake support, who starts offering questionable services and software. The purchasing of those is not advisable, as the alert itself is scareware and in reality it doesn’t require much to remove Critical System Failure. If your system is infected with this malware, then enter ‘642358497351’ to the Response Code area and click Next. If that has no effect, then you can use the instructions above.

How %THREAT% got installed on your computer?

Critical System Failure never comes to systems on its own, so if you want to secure your system from the malware, you need to watch out for software packages. When you implement a setup of a freeware, take notice of the EULA details and the installation mode, which should be set as Advanced or Custom. This will present you an aggregate picture of the setup elements, which in many cases turn out to be malicious. If you have doubts about a component’s safety, check it on the Internet and deselect it in case it is dangerous.


How to remove Critical System Failure?

To delete Critical System Failure completely you need to remove the application from the Control Panel and then check the drives for such leftovers as Critical System Failure files and registry entries.
We should warn you that performing some of the steps may require above-average skills, so, if you don’t feel experienced enough, you may apply to automatic removal tool.

Download Removal Tool

Performing an antimalware scan with Spy Hunter Removal Tool would automatically search out and delete all elements related to Critical System Failure. It is not only the easiest way to eliminate Critical System Failure, but also the safest and most assuring one.

Steps of Critical System Failure manual removal

Uninstall Critical System Failure from Control Panel

You could have downloaded the program yourself but, as it was stated before, more likely that the rogue application appeared on your system brought with other software. So, to get rid of Critical System Failure you need to call to memory what you have installed recently.

How to remove Critical System Failure from Windows XP

  1. Click the Start button and open Control Panel
  2. Go to Add or Remove Programs
  3. Find the application related to Critical System Failure and click Uninstall

How to remove Critical System Failure from Windows 7/Vista

  1. Click the Start button and open Control Panel
  2. Go to Uninstall Program
  3. Find the application related to Critical System Failure and click Uninstall

How to remove Critical System Failure from Windows 8/8.1

  1. Right-click the menu icon in left bottom corner
  2. Choose Control Panel
  3. Select the Uninstall Program line
  4. Uninstall the application related to Critical System Failure

How to remove Critical System Failure from Windows 10

  1. Press Win+X to open Windows Power menu
  2. Click Control Panel
  3. Choose Uninstall a Program
  4. Select the application related to Critical System Failure and remove it

noteIf you experience problems with removing Critical System Failure from Control Panel: there is no such title on the list, or you receive an error preventing you from deleting the application, see the article dedicated to this issue. Read what to do if program won’t uninstall from Control Panel


Delete files and registry entries added by Critical System Failure

Sometimes removal via Control Panel is not enough since the built-in application can leave some files. So, you need to find all of the following items and delete them.

Remove Critical System Failure files and folders:

%AppData%\WinErr\WinErr.exe

Remove Critical System Failure registry entries:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run "Windows Authorization" = "%AppData%\WinErr\WinErr.exe"


If the above-mentioned methods didn’t help in eliminating the threat, then it’s better to rely on an automatic way of deleting Critical System Failure.

Download Removal Tool

We also recommend to download and use Spy Hunter to scan the system after Critical System Failure removal to make sure that it is completely gone. The antimalware application will detect any vicious components left among system files and registry entries that can recover Critical System Failure.

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