THREAT REMOVAL

CRITICAL ALERT – Automatic disinfection failed is a tech support scam that generates intrusive pop-ups and uses Microsoft’s name to trick users into calling a specific phone number. The pop-ups could appear in full-screen mode and may also lock-up your browsers preventing you from using it properly.

The scareware approach used in the pop-ups is nothing new as it has been used in dozens of other scams. The only purpose of the CRITICAL ALERT – Automatic disinfection failed and similar attempts is to trick you into calling the provided number, +1 (833) 244-7113.

A tech support scammer will be expecting you on the other side of the line, and will likely do his best to convince you into giving remote access to your computer to fix the issues described in the pop-up message. Calling this number may compromise you in several ways. Your personal information and data could be stolen or damaged, malware can be planted on your system which could spy on your activities, etc. You could also be offered to buy a specific program, and you may need to reveal your payment and personal information.

So, what should you do if you have been affected by the CRITICAL ALERT – Automatic disinfection failed pop-ups? This article should help you.

Threat Summary

NameCRITICAL ALERT – Automatic disinfection failed
TypeTech Support Scam
Short DescriptionA tech support scam that is trying to scare you that you have a legitimate alert generated by Microsoft about a virus found on your PC. You are provided with a phone number to a supposed Microsoft tech support team.
SymptomsThe message may lock your screen. Pop-up boxes, messages, and redirects appear in your browser.
Distribution MethodFreeware Installations, Bundled Packages
Detection Tool See If Your System Has Been Affected by malware

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User ExperienceJoin Our Forum to Discuss CRITICAL ALERT – Automatic disinfection failed.

CRITICAL ALERT – Automatic disinfection failed – Details

The full text used by this tech support scam is the following:

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
CRITICAL ALERT
Automatic disinfection failed.
From now on, only a Windows technician is able to intervene and prevent data loss.
CONTACT THE Windows SUPPORT TO: +1 (833) 244-7113 (Free and non-premium call)
Data loss can occur in 200 seconds if a Windows technician does not assist you in time.

As visible by the text, the scammers are using Microsoft’s reputation to trick you into calling a number. You should keep in mind that Microsoft does not display such messages and does not work with any technicians over the phone. Furthermore, Microsoft’s only anti-virus protection is called Windows Defender, and it does not generate such pop-ups.

The CRITICAL ALERT – Automatic disinfection failed scareware pop-ups are displayed with the sole purpose of making you believe that your computer is infected because you visited a website. However, establishing the nature of these pop-ups does not clarify the reasons behind their sudden appearance. So, why are you seeing the “CRITICAL ALERT – Automatic disinfection failed” pop-ups?

CRITICAL ALERT – Automatic disinfection failed – Distribution Technique

The spread of the “CRITICAL ALERT – Automatic disinfection failed” scam message could be done with the help of suspicious domains that load in your browser after a visit of another corrupted website. So, you truly may have visited a suspicious website, as claimed by the message, that triggered the scareware pop-ups. If you visited a suspicious website and clicked on an ad, your browsers settings may have been altered to displayed the annoying fake error pop-ups.

Another reason to see the CRITICAL ALERT – Automatic disinfection failed scam message in your browser is the presence of a potentially unwanted program on your computer. Such a program probably tricked you into allowing its installation during the configuration of another program. So, the PUP associated with the appearance of the CRITICAL ALERT – Automatic disinfection failed tech support scam may have landed on your system along the download of a freeware program. Free programs tend to have compromised installers that come bundled with ad-supported software.

Remove CRITICAL ALERT – Automatic disinfection failed Pop-Ups

Before actually getting to the point of removal of the unwanted software that may be causing the CRITICAL ALERT – Automatic disinfection pop-ups, you will need to close your browser first, which cannot be done conventionally. However, the following steps should help you:

Step 1: Press CTRL+ALT+DEL.
Step 2: Open Task Manager.
Step 3: Right-Click on Google Chrome (chrome.exe) and click on End Process. If this doesn’t work, right-click again and click on End Process Tree.

After you have done this, you should follow the removal instructions underneath and remove the unwanted program either manually or automatically. It is advisable to download and scan your computer, using an advanced anti-malware program if you want to secure it and keep it protected in the future. Such a program will fully remove any intrusive programs and malware that may currently be residing on your PC.

Milena Dimitrova

Milena Dimitrova

An inspired writer and content manager who has been with SensorsTechForum since the beginning. Focused on user privacy and malware development, she strongly believes in a world where cybersecurity plays a central role. If common sense makes no sense, she will be there to take notes. Those notes may later turn into articles! Follow Milena @Milenyim

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Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

How to Remove CRITICAL ALERT – Automatic disinfection failed from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove CRITICAL ALERT – Automatic disinfection failed

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R


2. The "Run" Window will appear. In it, type "msconfig" and click OK.


3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


4. When prompted, click on "Restart" to go into Safe Mode.


5. You can recognise Safe Mode by the words written on the corners of your screen.


Step 2: Uninstall CRITICAL ALERT – Automatic disinfection failed and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


2. In the field type in "appwiz.cpl" and press ENTER.


3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.


Step 3: Clean any registries, created by CRITICAL ALERT – Automatic disinfection failed on your computer.

The usually targeted registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by CRITICAL ALERT – Automatic disinfection failed there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.


2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.


3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for CRITICAL ALERT – Automatic disinfection failed with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.


It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.


2. After you have installed SpyHunter, wait for it to update automatically.

SpyHunter5-update-2018


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

SpyHunter5-Free-Scan-2018


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

SpyHunter-5-Free-Scan-Next-2018

If any threats have been removed, it is highly recommended to restart your PC.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

Get rid of CRITICAL ALERT – Automatic disinfection failed from Mac OS X.


Step 1: Uninstall CRITICAL ALERT – Automatic disinfection failed and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to CRITICAL ALERT – Automatic disinfection failed:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to CRITICAL ALERT – Automatic disinfection failed. If you find it, right-click on the app and select “Move to Trash”.


6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to CRITICAL ALERT – Automatic disinfection failed. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove CRITICAL ALERT – Automatic disinfection failed via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as CRITICAL ALERT – Automatic disinfection failed. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Step 2: Scan for and remove malware from your Mac

When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove CRITICAL ALERT – Automatic disinfection failed from Google Chrome.


Step 1: Start Google Chrome and open the drop menu


Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"


Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.


Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Erase CRITICAL ALERT – Automatic disinfection failed from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window


Step 2: Select the "Add-ons" icon from the menu.


Step 3: Select the unwanted extension and click "Remove"


Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Uninstall CRITICAL ALERT – Automatic disinfection failed from Microsoft Edge.


Step 1: Start Edge browser.


Step 2: Open the drop menu by clicking on the icon at the top right corner.


Step 3: From the drop menu select "Extensions".


Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.


Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove CRITICAL ALERT – Automatic disinfection failed from Safari.


Step 1: Start the Safari app.


Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.


Step 3: From the menu, click on "Preferences".

stf-safari preferences


Step 4: After that, select the 'Extensions' Tab.

stf-safari-extensions


Step 5: Click once on the extension you want to remove.


Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the CRITICAL ALERT – Automatic disinfection failed will be removed.


How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Eliminate CRITICAL ALERT – Automatic disinfection failed from Internet Explorer.


Step 1: Start Internet Explorer.


Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'


Step 3: In the 'Manage Add-ons' window.


Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.


Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.


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