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

Tiyaking gumawa ng restore point kung sakaling may magkamali.

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. Pindutin ang Windows Key + X pagkatapos ay piliin Command Prompt (Admin).

2. Uri  sfc / scannow at pindutin ang 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.

Paraan 3 – Magsagawa ng Clean Boot

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 at pindutin ang Enter.

2.On the system configuration Window, you need to navigate to Tab ng mga serbisyo where you need to check to Itago ang lahat ng Mga Serbisyo ng Microsoft at i-click ang Huwag paganahin ang Lahat button.

3.Navigate sa Startup section at mag-click sa Buksan ang Task Manager.

4.Here you will locate all startup programs. You need to right-click on each program and Huwag paganahin ang all of them one by one.

5.After disabling all startup applications you need to come back to the system configuration window to i-save ang lahat ng mga pagbabago. Mag-click sa OK.

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

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 at pindutin ang Enter

2.Here you need to search for Sentro ng seguridad at pagkatapos ay right-click on Security Center and choose restart pagpipilian.

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. Ngayon pindutin ang 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.

tandaan: If you’re facing permission issues then right-click on Windows defender at piliin ang Mga Pahintulot. 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.

Paraan 6 - Set Windows Defender Service to Automatic

tandaan: Kung ang serbisyo ng Windows Defender ay naka-gray out sa Services Manager sundan ang post na ito.

1. Pindutin ang Windows Key + R pagkatapos ay i-type services.msc at pindutin ang Enter.

2.Hanapin ang mga sumusunod na serbisyo sa window ng Mga Serbisyo:

Serbisyo ng Inspeksyon sa Network ng Windows Defender Antivirus
Serbisyo ng Windows Defender Antivirus
Serbisyo ng Windows Defender Security Center

3.I-double-click ang bawat isa sa kanila at tiyaking nakatakda ang kanilang uri ng Startup Awtomatik at i-click ang Start kung hindi pa tumatakbo ang mga serbisyo.

4. I-click ang Ilapat na sinusundan ng OK.

5. I-reboot ang iyong PC upang i-save ang mga pagbabago at tingnan kung magagawa mo Fix Can’t Turn ON Windows Defender issue.

Paraan 7 - Set Correct Date & Time

1.I-click ang petsa at oras sa taskbar at pagkatapos ay piliin ang “Mga setting ng petsa at oras. "

2. Kung sa Windows 10, gawin ang “Awtomatikong Itakda ang Oras"Sa"on. "

3. Para sa iba, i-click ang “Internet Time” at lagyan ng tsek ang “Awtomatikong i-synchronize sa server ng oras ng Internet. "

4. Piliin ang Server "oras.windows.com” at i-click ang update at “OK”. Hindi mo kailangang kumpletuhin ang pag-update. I-click lamang ang 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. I-download at i-install CCleaner & Malwarebytes.

2.Patakbuhin ang Malwarebytes at hayaan itong i-scan ang iyong system para sa mga mapaminsalang file.

3. Kung may nakitang malware, awtomatiko itong aalisin ang mga ito.

4. Ngayon tumakbo CCleaner at sa seksyong "Cleaner", sa ilalim ng tab na Windows, iminumungkahi naming suriin ang mga sumusunod na seleksyon na lilinisin:

5. Kapag natiyak mo na ang tamang mga puntos ay nasuri, i-click lang Run Cleaner, at hayaang tumakbo ang CCleaner sa kurso nito.

6. Upang linisin pa ang iyong system, piliin ang tab na Registry at tiyaking naka-check ang mga sumusunod:

7. Piliin ang I-scan para sa Isyu at payagan ang CCleaner na mag-scan, pagkatapos ay i-click Ayusin ang Mga Napiling Isyu.

8. Kapag tinanong ng CCleaner “Gusto mo ba ng mga backup na pagbabago sa registry?” piliin ang Oo.

9. Kapag nakumpleto na ang iyong backup, piliin ang Ayusin ang Lahat ng Napiling Isyu.

10. I-restart ang iyong PC upang i-save ang mga pagbabago at makita kung magagawa mo Fix Can’t Turn ON Windows Defender issue.

Method 9 – Update Windows Defender

1. Pindutin ang Windows Key + X pagkatapos ay piliin Command Prompt (Admin).

2. I-type ang sumusunod na command sa cmd at pindutin ang Enter pagkatapos ng bawat isa:

“%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. Pindutin ang Windows Key + I para buksan ang Mga Setting pagkatapos ay mag-click sa “Update at Security"Icon.

2.Now mula sa kaliwang window pane siguraduhing pumili Pag-update ng Windows.

3. Susunod, i-click ang “Suriin ang mga update” button at hayaan ang Windows na mag-download at mag-install ng anumang mga nakabinbing update.

Inirerekomenda:

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.