Windows Security is a free and inbuilt antivirus in windows provided by Microsoft to protect your system from threats. Sometimes, it happens that windows security not working or it doesn’t work properly. In some cases, windows security does not start at all. And if you are not using any other antivirus app, then your system is wide open to mass security attacks. In this blog, we will give the best ways to fix windows security not working in Windows 11.

Here are the steps to fix the Windows Security Not Working Issue

Here are the steps to fix the Windows Security Not Working Issue

1. Turn on Windows Security In Your System

Sometimes,  when a system undergoes a malicious attack the first thing that happens is that the malicious program turns off all the antivirus programs.  If your system has undergone a such type of attack recently, then it can be possible that you’re facing this issue. If this is the case, then simply you have to turn on the Windows Security option on your system. Here are the steps to settle this issue:

  • Click on the search bar of the start menu. Type ‘security’ in the search bar.
  • Choose the best match.
  • In that,  you will see an option for Virus & threat protection.
  • Click on Turn On to enable this option for your system.

A new box will pop up on your screen and ask you to confirm. If you want changes, click on ‘yes’ to proceed. Windows Security gets enabled instantly. In this way, the windows security not working issue gets resolved.

2. Disable third-party antivirus software

If you have any additional antivirus installed in your system, it is the best time to get rid of third-party antivirus. Using Windows Security along with third-party antivirus causes various kinds of disruption in Windows Computers. So removing the supplementary antivirus may be a fair approach. Remove the additional antivirus and check that everything gets back to normal.

  • Open the settings.
  • Then, Go to Apps> Apps & features, and then search for the antivirus.
  • After finding it, click on the three-dots option and click on Uninstall.

Third-party antivirus apps get removed. Now restart your system and check whether Windows Security issues continue or not.

3. Reset The Windows Security App

This is one of the reasons for windows security not working. Third-party antivirus removal from your system mostly solves Windows Security issues. But in some cases, it doesn’t work, and then a time to complete reset of the windows security app.

  • Open settings. Click on App> Apps & Features.
  • Type security in the search bar of the menu box.
  •  A pop screen gets open and then click on three-dot options.
  • Choose advanced options.  Go down to the reset section and press reset.

You’ll get a confirmation message if you want to reset the app with the complete app data.  Click on Reset to proceed.

4. Update Windows Version

An old version of windows is the most common reason for windows security not working.  Do you remember when you last updated windows? If it’s been a little time, it is a good time to rebuff dust from your updates.

 To check for new updates, the following are the steps to resolve this issue:

  • Go to the Windows settings. In the search bar type “settings”.
  • Press Window +I together on your keyboard.
  • Go down and select the windows update option in the settings.
  • Select the Check for updates option. Then, Windows will start checking for updates on your system.
  • If any of the latest updates are available, they will display on the screen.
  • If any updates are available then you have to click on download and install.

When the updates get completed, give a quick restart to your device. See if the window security issue gets resolved or not.

5. Run an SFC and DISM Scan

SFC, short for System File Checker, is a Windows utility you can fall back on when some of your Windows files are faulty. It checks for file corruption and then tries to repair it. It is available through the command prompt. 

  • Go to the start menu search bar, type “command prompt”, then run it as administrator.

  • This starts the command prompt in an elevated mode, something required to run the SFC utility.


In an elevated mode command prompt gets launch, something mandatory to run the SFC utility. If this tool doesn’t work. Here is another tool that you can try and the other tool’s name is DISM.