Critical System Failure 855 518-8366 Removal Guide

Our specialists encountered a fake alert that was titled Critical System Failure 855 518-8366. It locks your screen and asks to enter the so-called Response code. We can only assume that users are supposed to get this code via phone. The fictitious technical support’s number is said to be Toll-Free, but since this is a scam, we would advise you not to take any chances. These people could try to sell you their services or software that you do not need before giving the code. Therefore, if you do not want to be scammed, you should just get rid of the fake notification and take control over the PC again. Users could try to remove the threat manually while following the instructions below as the process is not extremely complicated. Additionally, we recommend reading the full text for more information about Critical System Failure 855 518-8366.

You may have received such a suspicious application through malicious software installers, so Critical System Failure 855 518-8366 could have been avoided if you were more careful. To keep the system secure, the installers should be downloaded only from reliable sources. Naturally, it is necessary to check if the program itself and the company who published it are both trustworthy. Keeping a legitimate antimalware tool would be helpful too since it could warn you about malicious installers or unreliable software.

Moreover, Critical System Failure 855 518-8366 may have appeared after redirection to a harmful website too. In this case, you either visited such site on your own or there is a suspicious application on the system that could show you unreliable advertising content or redirect you to potentially dangerous web pages. Under such circumstances, it would be better to check the system for possible adware, browser hijackers, potentially unwanted programs, and so on.

The difference between Critical System Failure 855 518-8366 and other similar scams is that this fictitious alert requires you to enter a Response code. What’s more, the notification does not give you a long explanation of what has happened or why is it so important to call the Technical Support. Instead, it gives an impression you could easily unlock your computer by quickly calling the so-called Technical Support. Of course, since this is a fake alert, the people who could answer the phone would not belong to the Windows technical support. Unfortunately, they might try to scam you, for example, by selling unreliable or overpriced software. Thus, it is better not to contact them at all and immediately remove the fictitious notification.

The application should place a couple of executable files on the system and create a Registry entry as well. If you erase this data, Critical System Failure 855 518-8366 fake alert should be eliminated. If you want to learn how to locate and delete the mentioned files manually, have a look at the instructions available below. Also, you can download and install a legitimate antimalware tool, which would do the job for you. A security tool could get rid of other possible threats as well, so it is a better choice if you want to clean the system from other unreliable software too.

Remove Critical System Failure 855 518-8366

1. Press Win+E, wait till File Explorer appears.
2. Locate a file called card.exe; it may have been saved in the Desktop, Downloads, Temporary Files, and other directories.
3. Right-click card.exe and select Delete.
4. Go to C:\Users\User\Appdata\Roaming
5. Locate a folder titled as Winerr; it should contain a file called winerr.exe.
6. Right-click the folder and choose Delete.
7. Press Win+R, type regedit and click Enter.
8. Locate the given path: HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
9. Find a value name called Windows Authorization, right-click it and select Delete.
10. Right-click the Recycle bin and empty it.