Fix tsy afaka 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

Ataovy azo antoka fa mamorona teboka famerenana sao misy tsy mety.

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.Press Windows Key + X dia mifidy Command Prompt (Admin).

2. Karazana  sfc / scannow ary midira miditra.

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.

Fomba 3 - Manaova fanadiovana madio

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 ary tsindrio ny Enter.

2.On the system configuration Window, you need to navigate to Serivisy serivisy where you need to check to Afeno ny Microsoft Services rehetra ary tsindrio ny Atsaharo ny rehetra bokotra.

3.Navigate to Startup section ary tsindrio eo amin'ny Sokafy ny Task Manager.

4.Here you will locate all startup programs. You need to marina-Click on each program and Tsy velomina 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. tsindrio eo amin'ny OK.

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

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 ary tsindrio ny Enter

2.Here you need to search for Ivotoerana fiarovana ary avy eo marina-Click on Security Center and choose Haverina velomina safidy.

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. Tsindrio izao ny Enter.

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

HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindows 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.

Fanamarihana: If you’re facing permission issues then right-click on Windows Defender ary hifantina Fahazoan-dàlana. 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.

Fomba 6 - Set Windows Defender Service to Automatic

Fanamarihana: Raha toa ny serivisy Windows Defender dia miloko ao amin'ny Services Manager araho ity lahatsoratra ity.

1. Tsindrio Windows Key + R dia soraty services.msc ary tsindrio ny Enter.

2. Mitadiava ireto serivisy manaraka ireto ao amin'ny varavarankelin'ny serivisy:

Windows Defender Antivirus Network Inspection Service
Windows Defender Antivirus Service
Windows Defender Security Center Service

3. Tsindrio indroa ny tsirairay amin'izy ireo ary ataovy azo antoka fa napetraka ny karazana Startup azy Automatic ary tsindrio Start raha mbola tsy mandeha ny serivisy.

4. Tsindrio Ampiharo arahin'ny OK.

5. Avereno indray ny PC mba hitahiry ny fanovana ary jereo raha afaka manao izany ianao Fix Can’t Turn ON Windows Defender issue.

Fomba 7 - Set Correct Date & Time

1. Tsindrio ny daty sy fotoana eo amin'ny taskbar ary safidio ny "Fikirana daty sy ora. "

2. Raha eo amin'ny Windows 10, ataovy "Mametraha fotoana ho azy"Ho"on. "

3. Ho an'ny hafa, tsindrio eo amin'ny "Internet Time" ary asio marika eo amin'ny "Ampifandraiso ho azy amin'ny mpizara fotoana Internet. "

4. Select Server "time.windows.com” ary tsindrio ny fanavaozana ary “OK”. Tsy mila mamita ny fanavaozana ianao. Kitiho fotsiny OK.

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. Download ary apetraho CCleaner & Malwarebytes.

2.Alefaso ny Malwarebytes ary avelao izy hijery ny rafitrao mba hahitana rakitra manimba.

3. Raha misy malware hita dia hanala azy ireo ho azy.

4. Mihazakazaha izao CCleaner ary ao amin'ny fizarana "Cleaner", eo ambanin'ny tabilao Windows, dia manoro hevitra izahay hanamarina ireto safidy manaraka ireto mba hodiovina:

5. Rehefa azonao antoka fa voamarika ny teboka mety, tsindrio fotsiny Run Cleaner, ary avelao ny CCleaner mihazakazaka.

6. Mba hanadiovana ny rafitrao dia safidio ny tabilao Registry ary ho azo antoka fa voamarika ireto manaraka ireto:

7.Select Scan for Issue ary avelao ny CCleaner scan, dia tsindrio Ahitsio ireo olana voafantina.

8. Rehefa manontany ny CCleaner "Te hanova backup amin'ny rejisitra ve ianao?” mifidy Eny.

9. Rehefa vita ny backup, mifidiana Fix All Selected Issues.

10. Avereno indray ny PC mba hitahiry ny fanovana ary jereo raha afaka manao izany ianao Fix Can’t Turn ON Windows Defender issue.

Method 9 – Update Windows Defender

1.Press Windows Key + X dia mifidy Command Prompt (Admin).

2. Soraty ao anaty cmd ity baiko manaraka ity ary tsindrio ny Enter aorian'ny tsirairay:

“%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. Tsindrio ny Windows Key + I hanokatra ny Settings ary tsindrio ny "Fanavaozana sy fiarovana”Kisary.

2.Ankehitriny avy amin'ny fikandrana havia havia dia ataovy azo antoka fa misafidy Windows Update.

3. Manaraka, tsindrio ny "Hijerena ny vaovao farany” ary avelao ny Windows hisintona sy hametraka izay fanavaozana miandry.

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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.