Как установить windows defender в windows 11 если он вырезан

Все способы:

  • Способ 1: Использование других методов открытия
  • Способ 2: Исправление или сброс приложения
  • Способ 3: Установка недостающих пакетов через «PowerShell»
  • Способ 4: Восстановление и переустановка через «PowerShell»
  • Способ 5: Проверка системных обновлений
  • Способ 6: Проверка целостности системных файлов
  • Способ 7: Возвращение Windows 11 к исходному состоянию
  • Вопросы и ответы: 1

Способ 1: Использование других методов открытия

Перед тем как вы перейдете к реализации более сложных методов, позволяющих восстанавливать работу «Защитника Windows» в Виндовс 11, советуем попробовать один из других вариантов открытия классического приложения. Возможно, у вас возникли проблемы только с конкретным методом или не удается найти нужную кнопку, поэтому альтернативные варианты могут оказаться полезными. Детальнее о них читайте в материале по следующей ссылке.

Подробнее: Как открыть Windows Defender в Windows 11

Пропал Windows Defender в Windows 11-01

Способ 2: Исправление или сброс приложения

«Защитник Windows» является классическим приложением и представлен в ОС точно так же, как и другие стандартные программы. Для него тоже поддерживаются настройки и дополнительные параметры, среди которых можно отыскать сброс и исправление. Мы рекомендуем использовать эти инструменты в первую очередь, поскольку от вас требуется просто их запустить.

  1. Откройте «Пуск» и перейдите в «Параметры», кликнув по значку с изображением шестеренки.
  2. Пропал Windows Defender в Windows 11-02

  3. Далее в разделе «Приложения» выберите категорию «Приложения и возможности».
  4. Пропал Windows Defender в Windows 11-03

  5. В списке программ найдите «Безопасность Windows», справа в этой строке кликните по трем точкам для вызова меню, из которого выберите пункт «Дополнительные параметры».
  6. Пропал Windows Defender в Windows 11-04

  7. В блоке «Сбросить» сначала рекомендуем щелкнуть по «Исправить», чтобы запустить автоматический процесс восстановления.
  8. Пропал Windows Defender в Windows 11-05

  9. Если после него вы все еще не видите нужное вам приложение или испытываете трудности с его запуском, нажмите «Сброс», а по завершении повторите попытку перейти к стандартному антивирусу.
  10. Пропал Windows Defender в Windows 11-06

Способ 3: Установка недостающих пакетов через «PowerShell»

Этот вариант следует попробовать, если при выполнении предыдущего вы даже не нашли приложение с названием «Безопасность Windows». Это может означать, что оно просто отсутствует в операционной системе или файлы являются поврежденными. Для установки недостающих компонентов понадобится воспользоваться «PowerShell». Только учитывайте, что вместе с Защитником будут добавлены и пакеты других стандартных программ, отсутствующих в вашей сборке или удаленных вручную.

  1. Щелкните правой кнопкой мыши по «Пуску» и из появившегося контекстного меню выберите пункт «Терминал Windows (Администратор)».
  2. Введите команду Set-ExecutionPolicy Unrestricted для получения списка недостающих пакетов.
  3. Пропал Windows Defender в Windows 11-08

  4. После ее выполнения используйте Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"} и нажмите Enter для применения.
  5. Пропал Windows Defender в Windows 11-09

  6. Начнется процесс поиска и инсталляции файлов. Это может занять много времени, что зависит от количества отсутствующих пакетов и скорости вашего интернета. Как только вы увидите сообщение об успехе, попробуйте перезагрузить ПК и снова поискать Windows Defender на вашем компьютере.
  7. Пропал Windows Defender в Windows 11-010

Способ 4: Восстановление и переустановка через «PowerShell»

Следующий метод снова подразумевает использование консоли, но на этот раз команда будет всего одна и предназначена она исключительно для работы с «Защитником Windows». Она проверит его файлы, а при их отсутствии произведет повторную установку, что часто позволяет наладить работу стандартного компонента.

  1. Обязательно запускайте «Терминал Windows» от имени администратора, как это было показано в предыдущей инструкции.
  2. Введите команду Get-AppxPackage Microsoft.SecHealthUI-AllUsers | Reset-AppxPackage и нажмите Enter для ее применения.
  3. Пропал Windows Defender в Windows 11-012

  4. Через несколько секунд на экране должна появиться новая строка ввода. Это означает, что операция уже завершена, а вы можете переходить к проверке работы «Безопасности Windows».
  5. Пропал Windows Defender в Windows 11-013

Способ 5: Проверка системных обновлений

Сейчас очень активно выходят обновления для Windows 11, особенно это относится к различным апдейтам KB, связанным с безопасностью. Определенные из них вносят исправления в работу «Защитника Windows», что может вернуть компонент и наладить его запуск конкретно в вашем случае. Понадобится найти системные и необязательные обновления, затем произвести их инсталляцию.

  1. В «Параметрах» выберите раздел «Центр обновления Windows» и запустите процесс поиска апдейтов.
  2. Пропал Windows Defender в Windows 11-014

  3. Параллельно с этим можете перейти к просмотру необязательных обновлений, среди которых тоже могут быть патчи безопасности.
  4. Пропал Windows Defender в Windows 11-015

  5. Щелкните по списку «Необязательные обновления» для его открытия. Если апдейты будут найдены, отметьте их галочками и подтвердите инсталляцию (обновления драйверов в этом случае можно пропустить).
  6. Пропал Windows Defender в Windows 11-016

Способ 6: Проверка целостности системных файлов

Нередко причиной отсутствия или неудачного запуска «Защитника Windows» становятся поврежденные или отсутствующие системные файлы. Если ничего из перечисленного выше не помогло вам решить ситуацию, рекомендуем запустить системные утилиты, которые как раз и предназначены для сканирования и исправления подобных проблем. Детально о них рассказывает другой наш автор в своей статье по следующей ссылке.

Подробнее: Использование и восстановление проверки целостности системных файлов в Windows

Пропал Windows Defender в Windows 11-017

Способ 7: Возвращение Windows 11 к исходному состоянию

Прибегать к реализации этого метода стоит в тех случаях, когда при помощи предыдущих вам так и не удалось вернуть «Защитник Windows» в операционную систему. Возможно, его установка изначально прошла неуспешно по каким-то причинам или вы используете пиратскую сборку ОС, где компонент просто отсутствует. Можете попробовать выполнить переустановку путем возвращения Виндовс к исходному состоянию. Для этого не нужны специальные программы, обойтись можно штатным средством.

Подробнее: Сброс Windows 11 к заводским настройкам

Пропал Windows Defender в Windows 11-018

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This PowerShell command reinstalls Windows Defender in seconds

Updated on September 22, 2022

What to Know

  • You don’t need to download Windows Defender, because it’s integrated into Windows 11.
  • Enter this in a PowerShell window: Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage.
  • Or, go to Settings > Apps > Installed apps > Windows Security > three dots > Advanced options > Reset.

This article explains when and how to reinstall Windows Defender through the command line or Settings app in Windows 11.

How to Reinstall Windows Defender in Windows 11

Windows Defender (aka, Microsoft Defender) isn’t installed on your computer like a typical program, so you can’t reinstall it like you can regular software. Instead, follow these directions to use a PowerShell command to get the job done. It might take anywhere from 5 seconds to a few minutes to complete. If you can open Settings normally, there’s an easier method after these steps.

  1. Right-click the Start button and select Terminal (Admin).

    If that doesn’t work for whatever reason, use the search bar on the taskbar to search for PowerShell, and then right-click it to find the Run as administrator option.

  2. Copy the command exactly as it’s shown here, and then right-click in the PowerShell window to paste it (Ctrl+V works, too):

     Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
    
  3. Press Enter to immediately start the process to reset Windows Defender to its original settings so that it performs as a freshly installed app.

  4. You’ll know when it’s finished because you’ll see the blinking cursor again on a new line below the command you entered. In the meantime, you might briefly see a Deployment operation progress message.

    If you see lots of red text, and an «Access is denied» message, return to step 1 and make sure you’re opening PowerShell as an administrator.

Another way to reset Windows Defender is through Settings. If Settings opens fine for you, you don’t need to bother with a PowerShell command. Instead, go to Settings > Apps > Installed apps > Windows Security > three dots > Advanced options > Reset.

When to Reinstall Windows Defender

Technically, you’re not really reinstalling the program because Windows doesn’t actually let you uninstall it. That said, you might run the above command to reset Windows Defender if it’s just not working correctly.

The most obvious sign you need to do this is if you see an error when you try to open it. If it’s not opening as it should, and you see this message, the above command should fix it right away:

 You'll need a new app to open this windowsdefender link
Look for an app in the Microsoft Store

Or, maybe it does open, but some of its toggles won’t turn on or off, or you can’t even find a link to it on your computer. In these cases, the PowerShell command should refresh the tool back to working order.

Windows Defender Might Just Be Off

It’s possible that you’ve considered reinstalling Windows Defender because it isn’t catching malware, when in reality, it’s just not turned on. You might think it’s been uninstalled or is broken, but really it’s just disabled.

This is completely possible since Windows 11 lets you turn off its built-in antivirus program if you’d rather not use it.

Learn how to turn Windows Defender on and off for specific directions.

FAQ

  • Not really. While Windows Defender provides basic protection from threats, it’s no substitute for third-party antivirus software.

  • Go to Start > Settings > Privacy & Security > Windows Security > Virus & threat protection. Under Virus & Threat Protection Settings, select Manage settings, then under Exclusions, select Add or remove exclusions.

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Windows Defender missing on Windows 11 is one of the numerous problems users face when using Microsoft’s default antivirus on their PC.

In the past, users have complained that Windows 11 Defender is turned off. But some could not even find the app on their PC at all.

Thankfully, the fixes for this problem are not far-fetched, with a little tweak needed in most cases. Read on to find out what to do if Windows Defender is not installed on your Windows 11 device.

Why can’t I find Windows Defender?

There are various reasons why Windows Defender is not found in Windows 11, but we will highlight the most important ones:

  • Malware infection – Usually, the first thing a virus or malware does is disable or eliminate the antivirus. Good third-party antiviruses are harder to counter.
  • The service is not running – Though Windows Defender should show up even when the service is not running, this, coupled with other issues, can make the app inaccessible.
  • Registry problems – Changes to the registry, wherein Windows Defender is disabled, could be an underlying cause. The administrator could take action in case you are using an office computer.

So, let’s find out how to fix things if Windows Defender is not working in Windows 11.

Quick Tip:
If you want to protect your PC on all fronts, use a security utility with multi-layered protection. ESET HOME Security Essential’s feature set aims to protect you from today’s cyber threats.

It includes advanced banking and payment protection, webcam and microphone security, parental controls, anti-malware, anti-ransomware, and more.

ESET HOME Security Essential

ESET technology protects every click, screen tap, and step in your digital life.

How can I fix the Windows 11 Windows Defender missing issue?

1. Install Windows Defender Using PowerShell

    Using the commands below via Powershell should reinstall Windows Defender on your Windows 11 PC and solve the missing issue in no time.

  1. 1.Right-click on the Start icon in the Taskbar, and then select the Windows Terminal (Admin) option.

    windows-terminal-11-defender-not-installed

  2. 2.Click the Yes button to allow Windows Terminal to make changes to your PC.

  3. 3. Paste the following commands individually and hit Enter after each:Set-ExecutionPolicy UnrestrictedGet-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

    install-powershell-windows-11-defender

The command above helps to reinstall all default Windows apps. This is especially useful if Windows Defender is not installed in Windows 11 due to file corruption during an upgrade.

2. Repair and reinstall Windows Defender

  1. Press Windows + S to open the Search menu, enter Terminal in the text field, right-click on the relevant search result, and select Run as administrator.
    terminal

  2. Click Yes in the UAC prompt.
    Click Yes

  3. Type/paste the following command and hit Enter:Get-AppxPackage Microsoft.SecHealthUI-AllUsers | Reset-AppxPackage
    repair and reinstall windows 11 defender

Sometimes, Windows Defender might be installed, but the installation is either incorrect or incomplete. The command above will remove all components from the PC and reinstall Windows Defender in Windows 11.

To learn more, don’t miss our guide on how to reinstall Windows Security on Windows 11.

3. Perform a Windows update

  1. Press the Windows key, and select the Settings app.
    settings windows 11 defender not installed

  2. Select the Windows Update option on the left pane.
    windows 11 update defender not installed

  3. Click the Check for updates button in the right pane.
    check for update windows 11 defender

  4. If an update is listed after the scan, download and installs it on the computer.

Windows update comes with fixes for bugs and other errors in the previous versions.

If Windows Security is missing in Windows 11, an update should have fixes for the bugs responsible for the error. Also, if it is due to an incomplete or incorrect update, this should solve the problem if done correctly.

4. Perform a System Restore

  1. Press Windows + R to launch the Run command, enter rstrui.exe in the text field, and click OK.
    rstrui.exe to fix windows defender windows 11 missing

  2. Select Next in the System Restores window to proceed.
    next

  3. Choose a restore point from the options provided, and click Next.
    select restore point

  4. Verify the restore details, and click on Finish to initiate the restore process.
    finish

If you noticed the Windows Defender link missing after installing an update in Windows 11 or making changes to the system, this fix could help you return to the previous state.

Select a restore point created before installing the new update, and things should return to normal.

Read more about this topic

  • Recent Windows 11 update lets you disable profanity filter in voice typing
  • Microsoft wants Windows 10 users to upgrade to Windows 11 or Copilot + PCs
  • Windows 11 KB5055627 update makes File Explorer more fluid
  • A few keyboard settings are moving from Control Panel to Settings app in Windows 11
  • Details of Windows 11 25H2 spotted in the wild; likely to be a smaller update

Does Windows 11 have a built-in antivirus?

Yes, Windows 11 comes with Windows Security as the built-in antivirus. In case you are confused between the two, Windows Defender and Windows Security are the same thing.

The program efficiently identifies and eliminates malware and performs other essential functions to ensure security. But, in case you were looking for advanced security, we recommend using an effective third-party antivirus.

The Windows 11 Defender not installed problem is not the first faced by users. There have been complaints that Windows Defender is not opening or not enabled, among other issues.

Unlike some of these issues, this problem is not hard to fix, as shown above. We hope you find the helpful guide and get Windows Defender back to protect your PC.

Also, if you are wondering, Windows Defender can be downloaded from the Microsoft Store. This will download the Windows Defender 64-bit version in Windows 11.

Besides, find out what to do if you get the You’ll need a new app to open this windowsdefender link error in Windows 11.

Feel free to discuss the solution that worked for you in the comments section. You can also state any solution you tried successfully that is not in this guide.


Ola-Hassan Bolaji

Windows Hardware Expert

A Computer Engineering graduate, he has spent most of his life reading and writing about computers.

He finds joy in simplifying complex topics into simple solutions for PC users. The quality of his work and providing step-wise tested and proven solutions to PC issues are all that matter to him.

Away from computers, he is either reading or watching football!


Windows Defender is the default anti-malware program on every Windows PC. Users complain about Windows Defender missing in action from their computers for various reasons. Common causes of such issues include security program conflicts or corrupted files. Interestingly, you can find effective solutions to the Windows Defender missing problem within a few steps. In addition, you can also seek an alternative for safeguarding your data under any circumstance. Let’s solve the problem of the missing Windows Defender.

Windows Defender

See also:

Windows Defender Download

Quick Solutions 

Microsoft Defender is one of the leading anti-malware services available on Windows. Therefore, it is also referred to as Windows Defender in many cases. However, you may end up missing the Windows Defender on your computer on certain occasions.

You wouldn’t want to miss the most powerful antivirus program associated with Windows 11. Most importantly, it is an essential tool for the safety of your computer from numerous threats such as viruses, malware attacks, spyware, and other issues. If Windows Defender does not work, you don’t have to panic. The following post will outline a few simple solutions for the missing Windows Defender on your Windows 11 PC.

Causes of Missing Windows Defender on Windows 11

The best way to solve the problem of Windows Defender involves the identification of the causes of the problem. Why don’t you see the Windows Defender protecting your system against malicious threats? The most common reasons for the missing Windows Defender include deleted Windows Defender files or conflicts with another security program. Some other reasons are listed below:

  • You don’t have the latest updates for Windows 11.
  • The time and date on your computer are incorrect. 
  • You have turned off Windows Defender manually.
  • A system configuration error prevents Windows Defender from launching.
  • Windows Defender has been turned off due to a Group Policy.

📖Read Also: Windows 11 Virus & Threat Protection Not Working

For example, if you have installed new antivirus software, it can interfere with the working of Windows Defender. Generally, you would find the following common causes for which Windows Defender is not visible on your system. 

Full Analysis: Is Windows 11 Need Any Antivirus

Regardless of having built-in Windows Defender, antivirus software is essential to keep malware and spiteful attacks at bay! Consider using the EaseUS Todo Backup tool for complete PC protection.

How to Fix Windows Defender Missing Windows 11 Problem

As you can notice, the different causes for the missing Windows Defender problem are pretty trivial. With a keen eye for detail, you can identify these causes and resolve the issue with simple troubleshooting methods. For example, you can try resetting Windows Defender as the first solution. However, if you don’t find any likely results with the simple solutions, you can try the following solutions.

  1. Method 1. Re-enable Windows Defender If It’s Disabled
  2. Method 2. Restart Your System
  3. Method 3. Check for System Updates
  4. Method 4. Download and Run Microsoft Safety Scanner
  5. Method 5. Reinstall Defender from the Microsoft Website

Method 1. Re-enable Windows Defender If It’s Disabled

You can use the following steps to enable Windows Defender manually if it has been disabled by accident.

open Windows Defender

Step 1. Open «Settings» and access «Privacy & Security».

Step 2. Select «Windows Security» and click «Virus & threat protection».

Step 3. Open the Manage Settings link and enable «Real-Time Protection with Windows Defender».

Method 2. Restart Your System

One of the standard solutions for almost every problem is to restart your system. Here are the simple steps to restart your system.

Restart Windows PC

Step 1. Save all your work.

Step 2. Click on the «Windows» button

Step 3. Then click on the «Power» button, and then choose the «Restart» option.

Method 3. Check for System Updates

The lack of the latest updates can also be one of the common reasons for Windows Defender not working on your system. Here are a few easy steps to check for Windows updates.

Check for Windows Update

Step 1. Open Windows settings using «Win» and «I» keys. 

Step 2. Find «Windows Update» on the left-hand side of the screen and click on it.

Step 3. Look for the «Check for updates» option and click on it for running Windows updates manually.

Method 4. Download and Run Microsoft Safety Scanner

Microsoft Safety Scanner is a powerful tool tailored to identify and remove malware from Windows systems. You can download it and run a scan with the following steps.

Step 1. Download Microsoft Safety Scanner from the official Microsoft Support website and complete the installation process according to the instructions.

Microsoft Offline Security Scanner

Step 2. Once you have completed the installation process, you will find three different scanning options: Quick scan, Full scan, and Customized scan. 

Step 3. Depending on the type of scan you select, the Microsoft Safety Scanner would take several minutes for the scanning process. 

Method 5. Reinstall Defender from the Microsoft Website

If the above solutions don’t work out, you must choose the final resort, i.e., reinstalling Windows Defender.  Microsoft Defender is not available directly through the website, but you can download it using Windows terminal or PowerShell.

Step 1. Open Windows Terminal with admin permission.

Step 2. Copy-paste the following command and press the Enter key.

Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage

Step 3. It will install and fix any problem related to Defender in Windows.  

Once done, search for Windows Defender in the Start Menu and open it. Make sure to setup the real-time protection. 

Keep Data From Viruses Attack Even Windows Defender Go Missing

The problem of missing Windows Defender can have critical consequences for your computer. Without the default anti-malware protection tool, your system will likely be vulnerable to viruses and malware attacks. However, you need to note that whether you solve the issue of a missing Windows Defender or not, your data is at risk.

Therefore, your priority should be safeguarding your data above everything else. EaseUS Todo Backup tool can offer an exclusive opportunity for you to relax regarding data backup and security.

EaseUS Todo Backup is a powerful, one-stop destination for all your data backup requirements. You can easily take data backup from disks, files, operating systems, and partitions and store it according to your preferences. It also ensures easier data recovery to ensure you always have control over your data. However, the most crucial feature of EaseUS Todo Backup is called Security Zone. It’s a tool that creates a secret partition on your computer that cannot be explored or changed by the user or third-party apps or the Windows itself. This feature allows EaseUS Todo Backup to help protect your important data from ransomeware.

You can follow the steps listed below to keep your data from viruses attack even Windows Defender go missing.

Step 1. Select Backup Contents

On the main window, click the big question mark button to select backup contents. You can choose to back up individual files, entire disk or partition, operating system and mails. 

select backup contents

Step 2. Select Security Zone as Backup Destination

While selecting backup destination, you can see the Security Zone option. Click Security Zone and use it as a backup destination.

select security zone as backup location

However, if you’re first to use the Security Zone function, EaseUS Todo Backup will guide you to create one. Click «Create Security Zone«.

click create security zone

Choose a partition with enough free space for your backups and then click «Continue«.

choose a partition to create security zone

You can adjust the partition size for the security zone. Click «Create» to get it done. 

adjust partition size to create security zone

Step 3. Execute the backup task

Click «Backup Now» to start the backup process. Your backups of OS, files, drives and mails in the security zone will be fully protected from being seen or destroyed by virus, ransomeware and trojan. 

Bottom Line

The curious case of a missing Windows Defender can be annoying and troublesome if left unchecked. You don’t want to risk your valuable data to unprecedented malware attacks, viruses, or other threats. Therefore, you must identify the causes of the problem, such as a conflicting security program. Subsequently, you must implement the necessary troubleshooting methods and check whether Windows Defender works. Above everything else, you can ensure secure backup of your data with EaseUS Todo Backup, a reliable tool for safe data backup and recovery.

Download Windows Speedup Tool to fix errors and make PC run faster

If Windows Defender is missing or you see You’ll need a new app to open this windowsdefender error message in Windows 11/10, here is how you can get rid of the issue and start using Windows Defender or Windows Security. You need to go through all these solutions to troubleshoot the issue.

Windows Defender missing on Windows 11/10

If Windows Defender is missing on Windows 11/10, follow these steps:

  1. Ask your administrator
  2. Start Windows Security Health Service
  3. Reinstall using Windows Terminal
  4. Check Group Policy settings
  5. Use System Restore point

Before you begin, you should know that now Windows Defender is integrated with Windows Security.

1] Ask your administrator

It is the first thing you need to do when Windows Defender is missing on your Windows 11/10 computer. At times, your administrator could disable or remove certain apps or features from all the networked computers. However, if you do not face this problem on an organization computer, you can go through other solutions mentioned below.

2] Start Windows Security Health Service

Windows Defender missing on Windows 11/10

If the Windows Security Health Service has some issues or you have set an incorrect value, it may not work. In other words, Windows Security or Windows Defender might not be working on your computer. That is why you need to verify if Windows Security Health Service is running or not. Follow the following steps to check that:

  • Press Win+R to open the Run prompt.
  • Type regedit and hit the Enter button.
  • Click on the Yes option.
  • Go to this path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SecurityHealthService
  • Double-click on the Start REG_DWORD value.
  • Set the Value data as 3.
  • Click the OK button.

Finally, restart your computer and check if it resolves the issue or not.

3] Reinstall using Windows Terminal

Windows Defender missing on Windows 11/10

You can reinstall the Windows Defender using Windows Terminal’s CMD or standalone Command Prompt instance. Whether you use Windows 11 or Windows 10, the process is almost the same for both versions. To reinstall Windows Defender using Windows Terminal, follow these steps:

  • Press Win+X to open the WinX menu.
  • Select the Windows Terminal (Admin) option.
  • Click the Yes button.
  • Ensure that the Command Prompt instance is opened.
  • Enter this command:
PowerShell -ExecutionPolicy Unrestricted -Command "& {$manifest = (Get-AppxPackage *Microsoft.Windows.SecHealthUI*).InstallLocation + '\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}"

Alternatively, you can open the elevated Command Prompt window and enter the same command as above.

Read: 

  • How to Reset Windows Security Security Settings to default values
  • How to reset Windows Security app or reinstall Windows Defender

4] Check Group Policy settings

Windows Defender missing on Windows 11/10

There is a Local Group Policy Editor setting that might be responsible for this error on your computer. Therefore, follow these steps to check the Group Policy setting:

  • Search for gpedit.msc in the Taskbar search box.
  • Click on the individual search result.
  • Go to Computer Configuration > Administrative Templates > Windows Components > Microsoft Defender Antivirus
  • Double-click on the Turn off Microsoft Defender Antivirus setting.
  • Choose the Not Configured option.
  • Click the OK button.

Then, restart your computer and check if it resolves the problem or not.

Read: Windows Security is not opening or working

5] Use System Restore point

If none of the solutions has worked for you, it is probably the last thing you need to opt for in order to troubleshoot the issue. At times, an adware or malware attack could cause this issue on your computer. In such situations, even if you ditch the adware or malware, it might not fix all the problems. That is why it is recommended to use the System Restore point to get the job done. You can follow this guide to restore Windows using a System Restore point.

Read: Troubleshoot Definition update issues for Microsoft Defender

How do I fix Windows Defender missing?

If Windows Defender is missing on your computer, you need to follow the suggestions mentioned above. Ask your administrator, Start Windows Security Health Service, Reinstall using Windows Terminal, Check Group Policy settings or use System Restore point.

How do I restore Windows Defender?

To restore Windows Defender or Windows Security in Windows 11/10, you can follow the solutions mentioned above. However, you may not be able to do that when your system administrator has blocked access. Otherwise, you can start the Windows Security Health Service using Registry Editor, reinstall the app using Windows PowerShell, etc.

That’s all! Hope these solutions worked for you.

Read: Cannot or Unable to turn on Windows Defender.

Anand Khanse is the Admin of TheWindowsClub.com, a 10-year Microsoft MVP (2006-16) & a Windows Insider MVP (2016-2022). Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.

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