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  • Active
  • Severity: Medium
  • Adware
  • Windows
  • Verified · Mar 2019

How to remove Windows Defender Alert (0x3e7)

A step-by-step removal guide for affected devices. Follow the verified procedure below — most readers complete it in under 10 minutes.

Julie Splinters · Anti-malware specialist

Windows Defender Alert (0x3e7) – is the technical support scam that tricks people into believing their system is infected with legitimate looking Windows Defender alerts

Windows Defender Alert (0x3e7)Windows Defender Alert (0x3e7) is the program that delivers pop-ups on the screen stating about a particular Zepto virus in your system. Social engineering attack aims to trick users into calling the fake technical support number and get solutions for the problems. However, people behind the Windows Defender Alert: Error code 0x3e7 may ask you for the payment or subscription for the support service. You shouldn't consider calling the fake support number or paying for the technical help. There are no real issues with your device besides the adware that causes these fake pop-ups, although the real error code 0x3e7 is also called Registry Corrupt Error Code.[1]

Name Windows Defender Alert (0x3e7)
Type Adware/Scam
Category Potentially unwanted program
Symptoms Shows deceptive notifications and fake error alerts
Tactics Tricks people into calling the tech support number that leads to scammers offering solutions for an on-time fee
Purpose Get users' money or trick them into revealing valuable information or giving remote access to the device
Distribution Deceptive websites, software bundles, other malicious content
Elimination Ignore fake alerts and clean the system from real intruders with reputable anti-malware programs like FortectIntego

Pop-up alerts and messages stating about  Zepto virus detection in your system registry get displayed when the adware causing these Windows Defender Alert (0x3e7) messages infects the system. The browser gets locked, full-screen errors show up, and the number of technical support team seems the best solution. However, calling the provided number or contacting scammers in other ways may lead to more significant damage to your device or even privacy issues regarding identity theft.[2] 

Windows Defender Alert (0x3e7) virus is a technical support scam caused by the adware-type cyber threat. The message about system errors, malware detection or other problems with the machine is used to scare the users and get them to call +46 10 884 48 35 or any similar number. 

When the victim calls that phone number provided on the Windows Defender Alert (0x3e7) pop-up, most likely, the person on the other side of the phone disguises as a real Microsoft support team member, that can solve your issues. In most cases, people are not talking well in English, and they immediately offer to purchase software or tools or even pay for the service.

Remember that real technical support providers are not asking for money or subscription for the service. So stay away from contacting people when you encounter the message like Windows Defender Alert (0x3e7) which delivers the following text:

Windows Defender Alert : Error Code # 0x3e7
Please Do Not Shut Down Or Reset Your Computer .
**Windows Warning Alert **
Zepto Virus Detected In Your System Registry
Dear Windows User, The Website you have recently visited may have downloaded the Malware and Virus on your Windows system.
windows Defender is Suspicious about your Windows System Security.Please do not try to shutdown or restart your computer.It may lock your computer permanently or erase your hard disk .
Your TCP Connection Was Blocked by Your Windows Security System. Your Windows and internet connection has been locked until we may hear from you to immediately fix this issue.

Scammers who create similar attacks like Windows Defender Alert (0x3e7) scam typically attempt to get their victims to allow access to their PC. This way attackers can inject other malware on the system and infect the computer further. Also, this technique can be used to infiltrate the keystroke logger function and collect users logins to banking services when the victim is tricked into transferring the payment for support services.

You need to remove Windows Defender Alert (0x3e7) and make sure that additional malware did not get installed on the machine without your permission. For this system check, we recommend using tools like FortectIntego that can fully check your PC for malware, corrupted files or broken registries.

Windows Defender Alert (0x3e7) virus

As many experts[3] note, adware-type intruders cause more than pop-up ads and even can alter the setting of your browser or device in general. You should check the browsers for additional extensions or add-ons and set them back to default so that any changes can be reversed.

Although Windows Defender Alert (0x3e7) removal requires professional anti-malware tools and a full system scan, the message about the virus or other issues is false. Adware program or additional PUP is the cyber infection which causes these alerts.

Deceptive online content may lead to more damage

Users often think that browsing online is a relatively easy and safe process, but there is much more risk in visiting questionable sites or clicking on pop-up advertisements. Online advertisers deliver their content all over the internet with the purpose of generating views and revenue. This is why commercial sites cause tons of redirects.

However, when you get promotional ads that push installations of tools and programs and you purchase those products, you risk getting potentially unwanted programs. Also, when you download applications from p2p services or other websites and skip through installation steps, the risk gets bigger.

You can unknowingly install potentially unwanted programs or agree to get browser extensions, tools when you choose Default or Quick installations. By opting for Advanced or Custom process, you can see the list of programs and de-select unwanted or suspicious ones immediately.

Terminate Windows Defender Alert (0x3e7) scam and clean the machine further

Get the professional anti-malware program and remove Windows Defender Alert (0x3e7) alongside other PUPs from the system. This is the best solution because your computer gets thoroughly scanned and checked for malware or corrupted files. 

When your computer is scanned entirely using antivirus program, Windows Defender Alert (0x3e7) removal is the following procedure. The program shows you those scan results and indicates malicious programs, and you need to follow the suggested steps and delete intruders.

Uninstall from Windows

Uninstall from Windows 10/8:

  1. Type Control Panel into the Windows search box and open the result.
  2. Under Programs, select Uninstall a program.Uninstall from Windows 10/8

Uninstall from Windows 7/XP:

  1. Click on Windows Start > Control Panel (Windows XP users should click on Add/Remove Programs).
  2. In Control Panel, select Programs > Uninstall a program.Uninstall from Windows 7/XP

Remove the unwanted program:

  1. In the Programs and Features window, look for any recently installed suspicious entries, select them, and click Uninstall.
  2. If User Account Control appears, click Yes to confirm, then complete the removal.Uninstall the unwanted program from Windows

Reset Internet Explorer

Remove dangerous add-ons:

  1. Open Internet Explorer, click on the Gear icon (IE menu) on the top-right corner of the browser
  2. Pick Manage Add-ons.
  3. You will see a Manage Add-ons window. Here, look for suspicious plugins. Click on these entries and select Disable.Remove add-ons from Internet Explorer

Change your homepage if it was altered:

  1. Open IE and click on the Gear icon.
  2. Select Internet Options.
  3. In the General tab, delete the Home page address and replace it by your preferred one (for example, Google.com).
  4. Click Apply and then select OK.Reset IE homepage

Delete temporary files:

  1. Press on the Gear icon and select Internet Options.
  2. Under Browsing history, click Delete...
  3. Select relevant fields and press Delete.Clear temporary files from Internet Explorer

Reset Internet Explorer:

  1. Click on Gear icon > Internet options and select Advanced tab.
  2. Select Reset.
  3. In the new window, check Delete personal settings and select Reset.Reset Internet Explorer

Remove from Microsoft Edge

Delete unwanted extensions from MS Edge:

  1. Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
  2. From the list, pick the extension and click on the Gear icon.
  3. Click Remove.Remove extensions from Edge

Clear cookies and other browser data:

  1. Click on the Menu (three horizontal dots at the top-right of the browser window) and select Settings > Privacy, search, and services..
  2. Under Clear browsing data, pick Choose what to clear.
  3. Select Cookies and other site data and Cached images and files. (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.Clear Edge browsing data

Restore new tab and homepage settings:

  1. Click the menu icon and choose Settings.
  2. Then find On startup section.
  3. Click Remove next to any suspicious startup page.

Reset MS Edge if the above steps did not work:

  1. Press on Ctrl + Shift + Esc to open Task Manager.
  2. Click on More details arrow at the bottom of the window.
  3. Select Details tab.
  4. Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running.Reset MS Edge

Instructions for Chromium-based Edge

Delete extensions from MS Edge (Chromium):

  1. Open Edge and click select Settings > Extensions.
  2. Delete unwanted extensions by clicking Remove.Remove extensions from Chromium Edge

Clear cache and site data:

  1. Click on Menu and go to Settings.
  2. Select Privacy, search and services.
  3. Under Clear browsing data, pick Choose what to clear.
  4. Under Time range, pick All time.
  5. Select Clear now.Clear browser data from Chroum Edge

Reset Chromium-based MS Edge:

  1. Click on Menu and select Settings.
  2. On the left side, pick Reset settings.
  3. Select Restore settings to their default values.
  4. Confirm with Reset.
  5. This will disable extensions and reset startup pages but will not delete bookmarks, saved passwords, or browsing history.Reset Chromium Edge

Remove from Mozilla Firefox (FF)

Remove dangerous extensions:

  1. Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
  2. Select Add-ons.
  3. In here, select the unwanted extension and click Remove.Remove extensions from Firefox

Reset the homepage:

  1. Click three horizontal lines at the top right corner to open the menu.
  2. Choose Settings.
  3. Under Home, set your preferred homepage and new tab settings.

Clear cookies and site data:

  1. Click Menu and pick Settings.
  2. Go to Privacy & Security section.
  3. Scroll down to locate Cookies and Site Data.
  4. Click on Clear Data...
  5. Select Cookies and Site Data and Temporary cached files and pages, then click Clear.Clear cookies and site data from Firefox

Reset Mozilla Firefox

If clearing the browser as explained above did not help, reset Mozilla Firefox:

  1. Open Mozilla Firefox browser and click the Menu.
  2. Go to Help and then choose Troubleshooting Information.Reset Firefox 1
  3. Under Give Firefox a tune up section, click on Refresh Firefox...
  4. Once the pop-up shows up, confirm the action by pressing on Refresh Firefox.Reset Firefox 2

Remove from Google Chrome

Delete malicious extensions from Google Chrome:

  1. Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
  2. In the newly opened window, you will see all the installed extensions. Uninstall all suspicious extensions related to the unwanted program by clicking Remove.Remove extensions from Chrome

Clear cache and web data from Chrome:

  1. Click on Menu and pick Settings.
  2. Under Privacy and security, select Clear browsing data.
  3. Select Browsing history, Cookies and other site data, as well as Cached images and files.
  4. Click Clear data.Clear cache and web data from Chrome

Change your homepage:

  1. Click menu and choose Settings.
  2. Look for a suspicious site in the On startup section.
  3. Click on Open a specific or set of pages and click on three dots to find the Remove option.

Reset Google Chrome:

If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted components:

  1. Click on Menu and select Settings.
  2. In the Settings, scroll down and click Advanced.
  3. Scroll down and locate Reset and clean up section.
  4. Now click Restore settings to their original defaults.
  5. Confirm with Reset settings.Reset Chrome 2

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