About defender-critical-warning-alert.info

Few days before, defender-critical-warning-alert.info was identified by malware researchers including Avast, Kaspersky and SphHunter. It has been targeting windows operating system silently and misguiding the innocent victims that their PC has been infected with a severe malware infection. They analyzed the codes and confirmed that it contains the abilities of malware programs which are not safe to keep in the PC. defender-critical-warning-alert.info is a dodgy webpage which has been crafted by cyber-criminals in order to misguide the innocent victims. The error message, security alerts and all kinds of notifications that it shows are totally bogus. It is a trick to create panic and convince the victim to buy the useless promoted services and products.

 Apart from misguiding the victim, the attacker uses it to monitor the browsing activities and steal your credential informations. They use all of them against you later on. Probably, they will keep your data as hostage and blackmail you to pay a huge amount or they will use them for marketing purposes. Hence, you see any abnormal activities on your system, just scan your system using Antivirus software and eliminate the threats. If you didn’t get succeed, read the article carefully!!

How does defender-critical-warning-alert.info obtain access to your PC?

They can send spam emails containing malware attachments or links that might look totally suspicious or unexpected. It will create suspense in your mind and drive you into loading and running the files. As a result you become a victim of the adware. The other way is through bundler or installers. There are third-part party installers who promote this malware or bring in the targeted PC by bundling its payloads and files with free programs. They don’t reveal that they contain any kind of additional attachments with them. So, it is strongly recommended to choose advance/custom installation process if you can deselect installation of additional suspicious files. However, if your PC has already got infected with this malware then you must scan your PC with a powerful anti-malware tool immediately. Intact the System files, registries and unwanted entries so that your PC work smoothly.



Steps To Remove defender-critical-warning-alert.info From Compromised Computer

The infections like defender-critical-warning-alert.info or similar ones or those belong to other malware category are all designed to generate with only ill intention to make money for its developers who make use of any technique to force you down. However, most of the security experts associated with different security associations say this is not much harmful browser and can be removed from an infected computer by getting through some steps. If you follow the steps in the same order and with full attention as described in the procedures below, we hope you can also free up your PC easily. It’s recommended to take a hard copy of the guidelines on paper or get another computer to assist you following the steps without any hassles.

Step 1: Track and remove defender-critical-warning-alert.info from computer’s processes from task manager.

Step 2: Locate and delete the definition of this program from startup files, registry files, and host files.

Step 3: Removal of defender-critical-warning-alert.info from all reputed browsers.

Step 4: Delete defender-critical-warning-alert.info with an automatic solution (The Safest and most recommended method)

Step 1: Track and remove defender-critical-warning-alert.info from computer’s processes from task manager.

  • Launch the Task Manager by pressing a key combination CTRL+SHIFT+ESC simultaneously.

  • Review the suspicious processes and note down its file location on computer.end-malicious-process

  • Terminate the processes now.

  • Open the “Run” command box and enter the noted down location to open in file explorer.

  • Delete the file permanently.

Step 2: Locate and delete the definition of this program from startup files, registry files, and host files

  • Launch the file explorer or any folder from my computer.

  • Click on “View” option in the above Menu (Older Windows version’s user may go to control panel to open “Folder options”)

  • Choose “Folder and Search Options”

  • Click over “View” tab.

  • Scroll down to find “Show hidden files and folders” option, and check it in the check box.

  • Find “Hide protected operating system files” and uncheck it. (This will allow you to see super-hidden files in any folder to identify the suspicious ones.)

  • Click “Apply” then “Ok”

Cleaning defender-critical-warning-alert.info definitions from Windows registry

  • To open Windows registry editor, click Win+R combination.

  • Type “regedit” ro simply copy and paste in the command line

  • Press Ok.

  • Navigate to below mentioned registry files depending on your OS versions (32 bit or 64 bit) and delete the files.

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run] or

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] or


  • Now Launch the Windows explorer and navigate to %appdata% to find and delete suspicios executable files from there, and close the window.

Fixing Hosts file to block the unwanted redirections on all active browsers

  • Open windows explorer and navigate to Windows directory.

  • Go to System32/drivers/etc/host

  • open the host file and notice it. If the system is hijacked by the infection you would see several IP definitions at the bottom.

  • Select those IP addresses and delete them. (Don’t delete the local host entry)

  • Save and close the file, and exit the explorer window.

Step 3: Removal of defender-critical-warning-alert.info from all reputed browsers (Steps included for Chrome, Firefox & Internet Explorer)

Google Chrome

  • Launch Chrome browser.

  • Click over the main menu icon and select Tools or More Tools, then Extensions.

  • Scroll down to notice the list of installed extensions to find suspicious one and click the bin option beside it.

  • Click remove button to confirm the deletion.

  • Finally, Reset the Chrome settings to default leaving nothing behind.

Mozilla Firefox

  • Launch the Firefox and press CTRL+SHIFT+A to open extension Window.

  • Look for the defender-critical-warning-alert.info extension and Disable it.

  • Now go to Help section.

  • Click over Troubleshooting information then hit the Reset button.

  • Confirm the act to reset the browser.

Internet Explorer

  • Simply, open the browser and click thee Gear Icon on the upper right corner.

  • Navigate to Internet options and click it.

  • Now, navigate to Toolbars and Extensions, to see the list of installed addons to find unwanted one.

  • Disable or delete the selected extensions permanently.

  • In order to reset the Ie, click over Advanced tab, and click Reset.

  • Press OK button to confirm.

Cleaning the browser’s shortcuts on the computer is also recommended in most of the cases and should be accomplished for all installed browsers, for which the steps are:

  • Select the browser short-cut, and right click on it.

  • Navigate the properties and click it.

  • In the opened window, find the target option, and remove the argument for defender-critical-warning-alert.info.

  • Apply the changes.

Step 4: Remove defender-critical-warning-alert.info with an automatic solution

Although the removal method through manual instructions are effective and proven to provide the best results, still some of the victimized users may fail to get the results as per their desire. This can happen due to lack of technical consent to access most of the administrative utilities as used in above guidelines. If you also got stuck through the instructions or seeking the safest method which needs not any high end manual steps, then opting an automatic solution could be the best solution. You just need to do a few instructions taken in practice to install and scan the system deeply that will fix all issues and remove defender-critical-warning-alert.info completely. The required steps to do so is all here mentioned.


Easily remove all online trending threats from your PC safely at just single click.

Step 1: Download and install defender-critical-warning-alert.info removal tool and install it on your computer (Note: this is a free scanner that will detect the present malwares on your system only. In order to fix the threats completely, you would have to buy its full version to remove the threats.)

Step 1

Step 2: After the installation is finished, run the scanner and you will see the two options as depicted in the image below. Click on “Scan Computer Now” button.

Step 2

Step 3: In this step, you would see the scanning process bar with detection of found threats and its short description along-with its categorized thumbnail.

Step 3

Step 4: Lastly, the scanner finishes scanning the computer to show full list of detected threats on computer. Just click on “Fix Threats” button to complete the removal that hardly takes a few moments depending upon the nature and severity level of the malware items.

Step 4