A corrección non se pode activar Windows Defender

Fix Unable to turn on Windows Defender: Windows Defender is an inbuilt antimalware tool that detects virus and malware on your system. However, there are some instances when users experience that they are unable to turn on Windows Defender in Windows. What could be the reasons behind this problem? There are many users who explored that installing any third party antimalware software cause this problem.

Also, if you go to Settings > Update & Security > Windows Defender then you will see that the Real-time protection in Windows Defender is turned on but it’s greyed out and also everything else is turned off and you can’t do anything about these settings. Sometimes the main issue is that if you have installed a 3rd party Antivirus service then Windows Defender will shut itself off automatically. No matter what reasons are behind this problem, we will walk you through the methods to solve this problem.

Why can’t I turn on my Windows Defender?

One thing we need to understand that Windows Defender provides complete protection to our system. Therefore, not able to turn on this feature could be a serious problem. There are many reasons for you not being able to turn on Windows Defender in Windows 10 such as third-party Antivirus might be interfering, Windows Defender is turned off by group policy, incorrect date/time issue, etc. Anyway, without wasting any time let’s see How to fix the underlying cause of this issue using the below-listed troubleshooting guide.

Fix Unable to turn on Windows Defender in Windows 10

Asegúrate de crear un punto de restauración por se algo falla.

Method 1 – Uninstall any third-party Antivirus software

One of the most common causes of Windows Defender not working is third-party antivirus software. Windows Defender automatically shuts itself down once it detects any third party anti-malware software installed on your system. Therefore, you need to first start uninstallation any third party antimalware software. Moreover, you need to make sure that uninstallation is done properly all residue files of that software otherwise it will keep creating a problem for Windows Defender to get started. You can use some uninstaller software that will remove all remnants of your previous antivirus. Once the installations finished, you need to restart your system.

Method 2 – Run System File Checker (SFC)

Another method that you can opt for is system file diagnosis and repair. You can use command prompt tool to check whether Windows Defender files are corrupted. Moreover, this tool repairs all corrupted files.

1.Preme a tecla Windows + X e despois selecciona Indicador de comando (administrador).

2.Tipo  sfc / scannow e pulsa Intro.

3.This process takes some time so be patient while running this command.

4.In case sfc command did not resolve the problems, you can use another command. Just type the below-mentioned command and hit Enter:

DISM / Online / Cleanup-Image / RestoreHealth

5.It will scan thoroughly and repair corrupted files.

6.After completing these steps, check if you’re able to fix Can’t Turn ON Windows Defender issue or not.

Método 3: realice o arranque limpo

Sometimes there are some third party applications cause this problem, you can easily find those ones by performing the clean boot function.

1.Press Windows + R and type msconfig e presione Enter.

2.On the system configuration Window, you need to navigate to Pestana Servizos where you need to check to Ocultar todos os servizos de Microsoft e prema o Desactivar todo botón.

3. Navega ata Startup section e prema en Abrir xestor de tarefas.

4.Here you will locate all startup programs. You need to prema co botón dereito on each program and Incapacitar all of them one by one.

5.After disabling all startup applications you need to come back to the system configuration window to save all the changes. Prema en Aceptar.

6.You need to reboot your system and check if you’re able to Fix Can’t Turn ON Windows Defender issue ou non.

To zero in on the issue you need to perform clean boot using this guide and find the problematic program.

Method 4 – Restart Security Center Service

Another method to get your Windows Defender problem solved is restarting security center service. You need to activate and ensure that certain services are enabled.

1.Press Windows + R and type services.msc e prema Intro

2.Here you need to search for Centro de seguridade e despois prema co botón dereito on Security Center and choose Reinicia opción.

3.Now simply restart your device and check if the problem is solved or not.

Method 5 – Modify your registry

If you are still finding the problem in turning on the Windows Defender, you can opt for this method. You just need to modify the registry but before doing so make sure to create a backup of your Registry.

1.Press Windows + R and type regedit. Agora preme Intro.

2.Once you open the registry editor here you need to navigate to:

HKEY_LOCAL_MACHINESOFTWAREPolíticasMicrosoftWindows Defender

3.Select Windows Defender then in the right window pane find DisableAntiSpyware DWORD. Now double click this file.

4.Set the value data to 0 and click OK to save the settings.

Nota: If you’re facing permission issues then right-click on Windows Defender e seleccione Permisos. Follow this guide in order to take full control or ownership of the above registry key and again set the value to 0.

5.Most probably, after doing this step, your Windows Defender will start working on your system properly without any problem.

Método 6 - Set Windows Defender Service to Automatic

Nota: Se o servizo de Windows Defender está atenuado no Xestor de servizos, entón segue esta publicación.

1.Preme a tecla Windows + R e despois escribe services.msc e presione Enter.

2.Busca os seguintes servizos na xanela Servizos:

Servizo de inspección de redes antivirus de Windows Defender
Servizo antivirus Windows Defender
Servizo do centro de seguridade de Windows Defender

3.Fai dobre clic en cada un deles e asegúrate de que o seu tipo de inicio está configurado como Automático e faga clic en Inicio se os servizos aínda non se están a executar.

4. Fai clic en Aplicar seguido de Aceptar.

5.Reinicia o teu PC para gardar os cambios e ver se podes facelo Fix Can’t Turn ON Windows Defender issue.

Método 7 - Set Correct Date & Time

1. Fai clic no botón data e hora na barra de tarefas e despois selecciona "Configuración de data e hora. "

2.Se estás en Windows 10, fai "Establecer o tempo automaticamente"A"on. "

3. Para outros, fai clic en "Hora de Internet" e marca en "Sincronizar automaticamente co servidor de tempo de Internet. "

4.Seleccione o servidor "time.windows.com"e faga clic en actualizar e "Aceptar". Non é necesario completar a actualización. Só tes que facer clic en Aceptar.

Again check if you are able to Fix Windows Defender Does Not Start issue or not, if not then continue with the next method.

Method 8 – Run CCleaner and Malwarebytes

1.Descarga e instala CCleaner & Malwarebytes.

2.Executar Malwarebytes e deixe que escanee o seu sistema en busca de ficheiros daniños.

3.Se se atopa malware, eliminaraos automaticamente.

4.Agora corre CCleaner e na sección "Limpador", na pestana de Windows, suxerímoslle que comprobe as seguintes seleccións a limpar:

5.Unha vez que teñas a certeza de que os puntos correctos están marcados, simplemente fai clic Run Cleaner, e deixe que CCleaner siga o seu curso.

6. Para limpar o sistema aínda máis, seleccione a pestana Rexistro e asegúrese de marcar o seguinte:

7.Seleccione Escanear para detectar problemas e permita que CCleaner busque e, a continuación, prema Corrixir problemas seleccionados.

8. Cando CCleaner pregunta "Queres cambios de copia de seguridade no rexistro?” seleccione Si.

9.Unha vez que se complete a copia de seguridade, seleccione Corrixir todos os problemas seleccionados.

10. Reinicia o teu PC para gardar os cambios e ver se podes facelo Fix Can’t Turn ON Windows Defender issue.

Method 9 – Update Windows Defender

1.Preme a tecla Windows + X e despois selecciona Símbolo de comandos (administrador).

2. Escriba o seguinte comando en cmd e prema Intro despois de cada un:

“%PROGRAMFILES%Windows DefenderMPCMDRUN.exe” -RemoveDefinitions -All

“%PROGRAMFILES%Windows DefenderMPCMDRUN.exe” -SignatureUpdate

3.Once the command finish processing, close cmd and reboot your PC.

Method 10 – Update Windows 10

1.Preme a tecla Windows + I para abrir Configuración e, a continuación, fai clic en "Actualización e seguridade" ícona.

2.Agora desde o panel da xanela da esquerda asegúrese de seleccionar Actualización de Windows.

3. A continuación, fai clic en "Verifique se hai actualizacións” e deixe que Windows descargue e instale as actualizacións pendentes.

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Hopefully, above mentioned all methods will help you to Fix Unable to turn on Windows Defender in Windows 10 Issue. However, you need to understand that these methods should be followed systematically. In case you have more questions related to this problem leave your comments below.