How To Fix Windows Defender Missing Issue

Sometimes if there is a virus or malware attack then you might not see the Windows Defender service. When you open the security at a glance page, you may find an error. Or in some cases, the security providers page would show there are no antivirus and firewalls installed on the computer.

When you open the Windows Defender program, to do so copy and paste the following path in File explorer and hit enter, the folder may be completely empty.

C:\ProgramData\Microsoft\Windows Defender\Platform\

Do not worry, this issue can be solved. In this article, we will see the different methods to solve the Windows Defender missing issue. Let us start!

Method 1 – Execute Few Commands In The PowerShell Window To Reinstall Windows Security


Step 1 – Open Windows PowerShell as an administrator. To do this press Windows + X. Then from the appeared list click on Windows PowerShell (Admin)




Step 2 – A user account window will appear, click on yes

Step 3 – Copy and paste the below command in the PowerShell prompt then hit enter

Set-ExecutionPolicy Unrestricted




Step 4 – During execution, it will ask for the execution policy. Type A and hit enter. (A means yes to all)

Step 5 – Copy and paste the below command in the PowerShell prompt then hit enter. The execution process will start and it will reinstall the Windows defender or Windows security.

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}




Step 6 –  It will take some time to finish the process. You may find some red codes displaying on the screen saying error. Do not worry and interrupt just wait for the process to complete.

Step 7 – If the above command does not work then try to execute the below command that will reset the  windows store certification

Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage




Step 8 – Once done, copy and paste the below command then hit enter

Set-ExecutionPolicy Restricted




Step 9 – When asked for the execution policy, type A and hit enter. (A means yes to all)

Step 10 – Restart the computer and check if the issue is solved.


Method 2 – Run SFC And DISM Scans


Step 1 – Open the command prompt as an administrator. To do that, type cmd in the windows search bar then hold the ctrl + shift keys together and hit enter

Step 2 – A user account control window will open, click on yes

Step 3 – Copy and paste the following command in the command prompt and hit enter. Or type the following command in the command prompt and hit enter

sfc /scannow




Step 4 – It will take a few minutes to execute and complete the process. Do not interrupt the process

Step 5 – Once done, copy and paste the following commands one by one into the command prompt and then hit enter

Dism.exe /online /cleanup-image /restorehealth




The above commands analyze the system and check if there are any system inconsistencies and also start the repair process. Hence it might take around 15 and more minutes to complete the execution process, do not interrupt in between

Step 6 – Once done, restart the system and check if the issue is resolved

Step 7 – Restart the system


Method 3 – Reset The Windows Security Service 


Step 1 – Open the browser and go to the Microsoft website

Step 2 – Automatically fix windows security issues page will open, click on download button




Step 3 – Once downloaded, click on the downloaded .exe file and run it

Step 4 Once the process is completed, go to the Windows start button then type Windows security

Step 5 – In the search list, right click on windows security then click on app settings


App Settings


Step 6 – Scroll down and reset the application by clicking on the reset button




Step 7 – A pop up will appear, again click on reset


Method 4  – Start The Windows Security Health Service Using Windows Registry


Step 1 – Open the run prompt using Windows + R keys together

Step 2 – Type regedit in the run prompt and hit enter




Step 3 – A user account control window will open, click on yes. This will open the registry editor

Step 4 – Navigate to the following path in the Windows registry



Health Service


Step 5 – At the right side, double click on start 




Step 6 – Enter 3 in the value data field then click on ok


Value Data


Step 7 – Restart the system and then check if the issue is resolved.


Method 5 – Download And Install The Windows ISO File


Step 1 – Download the ISO file from Microsoft website. ( For example, for my computer ISO file would be this link)

Step 2 Back up all the computer data and then install the Windows by running the ISO file

Step 3 – Once the installation is done restart the system and check if the issue is solved.


That’s it! I hope the above provided information is helpful and easy to understand. Let us know which of the method worked for you. Thank you!!