Pataisymas Nepavyko įjungti „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

Būtinai sukurkite atkūrimo tašką, jei kas nors nutiktų.

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. Paspauskite „Windows“ klavišą + X, tada pasirinkite Komandinis eilutė (administratorius).

2. Tipas  SFC / scannow ir paspauskite 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 / Valymas 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.

3 būdas – atlikite švarų paleidimą

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 ir paspauskite "Enter".

2.On the system configuration Window, you need to navigate to Paslaugų skirtukas where you need to check to Slėpti visus Microsoft Paslaugos ir spauskite Išjungti visus mygtuką.

3.Navigate į Startup section ir spauskite Atidarykite „Task Manager“.

4.Here you will locate all startup programs. You need to dešiniuoju pelės mygtuku spustelėkite on each program and išjungti 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. Spauskite ant Gerai.

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

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 ir paspauskite Enter

2.Here you need to search for Saugos centras ir tada dešiniuoju pelės mygtuku spustelėkite on Security Center and choose Iš naujo pasirinkimas.

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. Dabar paspauskite Enter.

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

HKEY_LOCAL_MACHINESOFTWAREPolitika „MicrosoftWindows 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.

Pastaba: If you’re facing permission issues then right-click on "Windows Defender" ir pasirinkite Leidimai. 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.

6 metodas - Set Windows Defender Service to Automatic

Pastaba: Jei „Windows Defender“ paslauga paslaugų tvarkytuvėje yra pilka, tada sekite šį įrašą.

1. Paspauskite „Windows“ klavišą + R, tada įveskite services.msc ir paspauskite "Enter".

2. Paslaugų lange suraskite šias paslaugas:

„Windows Defender“ antivirusinė tinklo tikrinimo paslauga
„Windows Defender“ antivirusinė paslauga
„Windows Defender“ saugos centro paslauga

3. Dukart spustelėkite kiekvieną iš jų ir įsitikinkite, kad nustatytas jų paleidimo tipas Automatinis ir spustelėkite Pradėti, jei paslaugos dar neveikia.

4.Spustelėkite Taikyti ir Gerai.

5. Iš naujo paleiskite kompiuterį, kad išsaugotumėte pakeitimus ir patikrintumėte, ar galite tai padaryti Fix Can’t Turn ON Windows Defender issue.

7 metodas - Set Correct Date & Time

1.Spauskite ant data ir laikas užduočių juostoje, tada pasirinkite „Datos ir laiko nustatymai"

2. Jei naudojate „Windows 10“, padarykite „Nustatykite laiką automatiškai"Iki"on"

3. Kitiems spustelėkite „Interneto laikas“ ir pažymėkite „Automatiškai sinchronizuoti su interneto laiko serveriu"

4. Pasirinkite Serveris “time.windows.com“ ir spustelėkite atnaujinti ir „Gerai“. Jums nereikia užbaigti atnaujinimo. Tiesiog spustelėkite Gerai.

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. Atsisiųskite ir įdiekite CCleaner & Malwarebytes.

2.Paleiskite „Malwarebytes“. ir leiskite nuskaityti jūsų sistemą, ar nėra kenksmingų failų.

3.Jei bus rasta kenkėjiškų programų, ji automatiškai jas pašalins.

4.Dabar bėk CCleaner ir skirtuke „Windows“ esančiame skiltyje „Valytojas“ siūlome patikrinti šiuos pasirinkimus, kuriuos reikia išvalyti:

5. Įsitikinę, kad yra pažymėti tinkami taškai, tiesiog spustelėkite Vykdykite švaresnį, ir leiskite CCleaner veikti savo keliu.

6. Norėdami toliau išvalyti sistemą, pasirinkite skirtuką Registras ir įsitikinkite, kad yra pažymėta:

7. Pasirinkite Scan for Issue ir leiskite CCleaner nuskaityti, tada spustelėkite Išspręskite pasirinktas problemas.

8. Kai CCleaner klausiaAr norite kopijuoti registro pakeitimus?“ pasirinkite Taip.

9. Baigę atsarginę kopiją, pasirinkite Pataisyti visas pasirinktas problemas.

10. Iš naujo paleiskite kompiuterį, kad išsaugotumėte pakeitimus ir patikrintumėte, ar galite tai padaryti Fix Can’t Turn ON Windows Defender issue.

Method 9 – Update Windows Defender

1. Paspauskite „Windows“ klavišą + X, tada pasirinkite Komandų eilutė (administratorius).

2. Įveskite šią komandą į cmd ir po kiekvienos paspauskite Enter:

“%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. Paspauskite „Windows“ klavišą + I, kad atidarytumėte „Nustatymai“, tada spustelėkite „Atnaujinimas ir sauga“Piktogramą.

2. Dabar kairėje lango srityje įsitikinkite, kad pasirinkote "Windows" naujinimas.

3. Tada spustelėkite „Patikrinti atnaujinimus“ mygtuką ir leiskite „Windows“ atsisiųsti bei įdiegti visus laukiančius naujinimus.

Rekomenduojama:

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.