ʻAʻole hiki ke hoʻololi i ka 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

E hōʻoia i ka hana ʻana i kahi hoʻihoʻi i ka wā e hewa ai kekahi mea.

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. E kaomi Windows Key + X a laila koho Polokalamu kauoha (Admin).

2. ʻAno  sfc / scannow ae komo i loko.

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:

ʻO DISM / Online / Cleanup-Image / Hoʻomaha Loa

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.

Ka Papa Hana 3 - Hana i ka Boot Maʻemaʻe

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 a hoʻokomo i kahi komo.

2.On the system configuration Window, you need to navigate to Pākuʻi lawelawe where you need to check to Hūnā nā lawelawe Microsoft a pau a kaomi ma ka Hoʻopio i nā mea āpau pihi.

3. E hoʻokele i Startup section ae kaomi ma Wehe i ka luna hana.

4.Here you will locate all startup programs. You need to pāomi-pololei on each program and E hoʻopio i 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. Kaomi ma OK.

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

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 a kaomi Enter

2.Here you need to search for Ka Hale Paʻi a laila pāomi-pololei on Security Center and choose E hoʻomaka hou koho.

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. E kaomi iā 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.

'Ōlelo Aʻo: If you’re facing permission issues then right-click on Pūkākūkā Windows a ua koho Nā ʻae ʻae. 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.

Na Huaolelo 6 - Set Windows Defender Service to Automatic

'Ōlelo Aʻo: Inā ʻeleʻele ka lawelawe ʻo Windows Defender ma Services Manager a laila e hahai i keia pou.

1.Press Windows Key + R a laila e kikokiko services.msc a hoʻokomo i kahi komo.

2. E huli i nā lawelawe ma ka puka makani Services:

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

3. E kaomi pālua i kēlā me kēia o lākou a e hōʻoia i ka hoʻonohonoho ʻana i kā lākou ʻano Startup akomi a kaomi hoʻomaka inā ʻaʻole holo nā lawelawe.

4. Kaomi i ka Apply i ukali ʻia e OK.

5. E hoʻomaka hou i kāu PC e mālama i nā loli a ʻike inā hiki iā ʻoe Fix Can’t Turn ON Windows Defender issue.

Na Huaolelo 7 - Set Correct Date & Time

1. Kaomi ma ka lā a me ka manawa ma ka papa hana a laila koho "Nā hoʻonohonoho lā a me ka manawa. "

2. Inā ma Windows 10, e hana "Hoʻonohonoho ʻakomi i ka manawa"I"on. "

3. No nā poʻe ʻē aʻe, e kaomi ma ka "Internet Time" a koho i ka māka ma "Hoʻopili ʻokoʻa me ke kikowaena manawa pūnaewele. "

4. E koho i ke kikowaena "manawa.windows.com"a kaomi i ka update a "OK". ʻAʻole pono ʻoe e hoʻopau i ka hōʻano hou. Kaomi wale 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. Hoʻoiho a hoʻouka CCleaner & Malwarebytes.

2.Holo i Malwarebytes a hoʻokuʻu iā ia e nānā i kāu ʻōnaehana no nā faila ʻino.

3. Inā loaʻa ka polokalamu kiloʻino e hoʻoneʻe 'akomi iā lākou.

4.Now holo CCleaner a ma ka ʻāpana "Cleaner", ma lalo o ka Windows tab, manaʻo mākou e nānā i nā koho e hoʻomaʻemaʻe ʻia:

5. Inā ʻoe i hoʻopaʻa pono i nā helu kūpono, kaomi wale Holo Cleaner, a hoʻokuʻu iā CCleaner e holo i kāna ala.

6. No ka hoʻomaʻemaʻe ʻana i kāu ʻōnaehana koho hou i ka Registry tab a e hōʻoia i ka nānā ʻana i kēia mau mea:

7. E koho iā Scan for Issue a ʻae iā CCleaner e nānā, a laila kaomi Hoʻoponopono i nā pilikia i koho ʻia.

8. Ke nīnau ʻo CCleaner "Makemake ʻoe i nā hoʻololi hoʻihoʻi i ka papa inoa?” koho ʻAe.

9. I ka pau ʻana o kāu waihona, koho i ka Fix All Selected Issues.

10. E hoʻomaka hou i kāu PC e mālama i nā loli a ʻike inā hiki iā ʻoe Fix Can’t Turn ON Windows Defender issue.

Method 9 – Update Windows Defender

1. E kaomi Windows Key + X a laila koho ʻO ke kauoha kauoha (Admin).

2. E hoʻokomo i kēia kauoha i loko o ka cmd a kaomi iā Enter ma hope o kēlā me kēia:

“%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. E kaomi iā Windows Key + I e wehe i nā ʻōkuhi a laila kaomi ma ka "Hoʻohou & palekana”Ikona.

2.Now mai ka hema-lima pukaaniani pane e hōʻoia e koho ʻO Windows Update.

3. A laila, kaomi ma luna o "E hoʻopaʻa i nā mea hou” a e ʻae iā Windows e hoʻoiho a hoʻokomo i nā mea hou e kali nei.

haawiia:

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.