Lagfæring Get ekki kveikt á 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

Gakktu úr skugga um að búa til endurheimtarstað ef eitthvað fer úrskeiðis.

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. Ýttu á Windows takkann + X og veldu síðan Stjórn hvetja (Admin).

2. Gerð  sfc / scannow og sláðu inn.

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 / Hreinsa 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.

Aðferð 3 - Framkvæmdu 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 og ýttu á Enter.

2.On the system configuration Window, you need to navigate to Þjónustuflipi where you need to check to Fela allar Microsoft þjónustur og smelltu á Afvirkja allt hnappinn.

3. Sigla til Startup section og smelltu á Opna verkefnisstjóra.

4.Here you will locate all startup programs. You need to hægri-smella on each program and Slökkva 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. Smelltu á Lagi.

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

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 og ýttu á Enter

2.Here you need to search for Öryggi Center og þá hægri-smella on Security Center and choose Endurræsa valkostur.

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 ríkisstjóratíð. Ýttu nú á Enter.

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

HKEY_LOCAL_MACHINESOFTWAREPólitíkMicrosoftWindows 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.

Athugaðu: If you’re facing permission issues then right-click on Windows Defender og velja Heimildir. 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.

Aðferð 6 - Set Windows Defender Service to Automatic

Athugaðu: Ef Windows Defender þjónusta er grá í Services Manager þá fylgdu þessari færslu.

1. Ýttu á Windows takkann + R og sláðu síðan inn services.msc og ýttu á Enter.

2.Finndu eftirfarandi þjónustu í þjónustuglugganum:

Windows Defender Antivirus netskoðunarþjónusta
Windows Defender vírusvarnarþjónusta
Windows Defender öryggismiðstöð þjónusta

3.Tvísmelltu á hvern þeirra og vertu viss um að Startup gerð þeirra sé stillt á Sjálfvirk og smelltu á Start ef þjónustan er ekki þegar í gangi.

4.Smelltu á Apply og síðan OK.

5.Endurræstu tölvuna þína til að vista breytingar og athugaðu hvort þú getir það Fix Can’t Turn ON Windows Defender issue.

Aðferð 7 - Set Correct Date & Time

1. Smelltu á Dagsetning og tími á verkefnastikunni og veldu síðan “Stillingar dagsetningar og tíma. "

2.Ef á Windows 10, gerðu “Stilltu tíma sjálfkrafa"Til"on. "

3.Fyrir aðra, smelltu á "Internet Time" og merktu við "Samstilltu sjálfkrafa við nettímaþjón. "

4.Veldu Server “time.windows.com" og smelltu á uppfæra og "OK". Þú þarft ekki að ljúka uppfærslu. Smelltu bara á 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.Hlaða niður og setja upp CCleaner & Malwarebytes.

2.Keyra Malwarebytes og láttu það skanna kerfið þitt fyrir skaðlegum skrám.

3.Ef spilliforrit finnst mun það sjálfkrafa fjarlægja þá.

4. Hlaupa nú CCleaner og í hlutanum „Hreinari“, undir Windows flipanum, mælum við með því að athuga eftirfarandi val sem á að hreinsa:

5.Þegar þú hefur gengið úr skugga um að réttir punktar séu athugaðir, smelltu einfaldlega Hlaupa hreinni, og láttu CCleaner ganga sinn gang.

6.Til að þrífa kerfið þitt frekar skaltu velja Registry flipann og tryggja að eftirfarandi sé hakað:

7.Veldu Scan for Issue og leyfðu CCleaner að skanna, smelltu svo Lagfærðu valin vandamál.

8.Þegar CCleaner spyr “Viltu breytingar á öryggisafriti á skránni?” veldu Já.

9.Þegar öryggisafritinu er lokið skaltu velja Fix All Selected Issues.

10.Endurræstu tölvuna þína til að vista breytingar og athugaðu hvort þú getir það Fix Can’t Turn ON Windows Defender issue.

Method 9 – Update Windows Defender

1. Ýttu á Windows takkann + X og veldu síðan Stjórn hvetja (Admin).

2.Sláðu inn eftirfarandi skipun í cmd og ýttu á Enter eftir hverja skipun:

“%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. Ýttu á Windows takka + I til að opna Stillingar og smelltu síðan á “Uppfærsla og öryggi”Táknið.

2.Nú skaltu ganga úr skugga um að velja úr vinstri glugganum Windows Update.

3. Næst skaltu smella á “Athugaðu með uppfærslur” hnappinn og láttu Windows hlaða niður og setja upp allar uppfærslur sem bíða.

Mælt með:

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.