Fix Can’t Turn ON 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

Pastikan untuk membuat titik pemulihan untuk berjaga-jaga jika terjadi kesalahan.

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.Tekan Tombol Windows + X lalu pilih Command Prompt (Admin).

2.Type  sfc / scannow dan tekan enter.

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.

Metode 3 – Lakukan Boot Bersih

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 dan tekan Enter.

2.On the system configuration Window, you need to navigate to Tab Layanan where you need to check to Sembunyikan semua Layanan Microsoft dan klik pada Nonaktifkan Semua .

3.Navigasi ke Startup section dan klik Buka Task Manager.

4.Here you will locate all startup programs. You need to klik kanan on each program and Disable 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. Klik pada OK.

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

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 dan tekan Enter

2.Here you need to search for Pusat Keamanan lalu klik kanan on Security Center and choose Restart .

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. Sekarang tekan Enter.

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

HKEY_LOCAL_MACHINESOFTWAREKebijakanMicrosoftWindows 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.

Catatan: If you’re facing permission issues then right-click on Windows Defender dan pilih Izin. 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.

Metode 6 - Set Windows Defender Service to Automatic

Catatan: Jika layanan Windows Defender berwarna abu-abu di Manajer Layanan ikuti postingan ini.

1.Tekan Tombol Windows + R lalu ketik services.msc dan tekan Enter.

2.Temukan layanan berikut di jendela Layanan:

Layanan Inspeksi Jaringan Antivirus Windows Defender
Layanan Antivirus Windows Defender
Layanan Pusat Keamanan Windows Defender

3.Klik dua kali pada masing-masingnya dan pastikan jenis Startupnya disetel ke secara otomatis dan klik Mulai jika layanan belum berjalan.

4.Klik Terapkan diikuti dengan OK.

5.Reboot PC Anda untuk menyimpan perubahan dan lihat apakah Anda bisa Fix Can’t Turn ON Windows Defender issue.

Metode 7 - Set Correct Date & Time

1.Click di tanggal dan waktu di bilah tugas lalu pilih “Pengaturan tanggal dan waktu. "

2.Jika di Windows 10, buat “Atur Waktu Secara Otomatis"To"on. "

3.Untuk yang lain, klik “Waktu Internet” dan centang tanda “Sinkronisasi otomatis dengan server waktu Internet. "

4.Pilih Server “waktu.windows.com” dan klik perbarui dan “OK”. Anda tidak perlu menyelesaikan pembaruan. Klik saja oke.

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.Unduh dan instal CCleaner & Malwarebytes.

2.Jalankan Malwarebytes dan biarkan ia memindai sistem Anda untuk mencari file berbahaya.

3.Jika malware ditemukan maka secara otomatis akan menghapusnya.

4.Sekarang jalankan CCleaner dan di bagian “Pembersih”, di bawah tab Windows, kami menyarankan untuk memeriksa pilihan berikut yang akan dibersihkan:

5.Setelah Anda memastikan poin yang tepat telah dicentang, cukup klik Jalankan Pembersih, dan biarkan CCleaner berjalan dengan sendirinya.

6.Untuk membersihkan sistem Anda lebih lanjut pilih tab Registry dan pastikan yang berikut ini dicentang:

7.Pilih Pindai Masalah dan izinkan CCleaner memindai, lalu klik Perbaiki Masalah yang Dipilih.

8.Ketika CCleaner bertanya “Apakah Anda ingin membuat cadangan perubahan ke registri?” pilih Ya.

9.Setelah pencadangan Anda selesai, pilih Perbaiki Semua Masalah yang Dipilih.

10.Restart PC Anda untuk menyimpan perubahan dan lihat apakah Anda bisa Fix Can’t Turn ON Windows Defender issue.

Method 9 – Update Windows Defender

1.Tekan Tombol Windows + X lalu pilih Command Prompt (Admin).

2.Ketik perintah berikut ke dalam cmd dan tekan Enter setelah masing-masing perintah:

“%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.Tekan Tombol Windows + I untuk membuka Pengaturan lalu klik “Update & SecurityIkon

2.Sekarang dari panel jendela sebelah kiri pastikan untuk memilih Windows Update.

3.Selanjutnya, klik “Periksa pembaruantombol ” dan biarkan Windows mengunduh & menginstal pembaruan apa pun yang tertunda.

Rekomendasi:

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.