7 Best Ways to Fix Windows Security Not Opening on Windows 11

Windows 10 and Windows 11 come pre-installed with a built-in antivirus program called Windows Security. Windows Security comes for free, and it protects your computer from various security sites like malware, viruses, PUPs, etc.


Also, the latest version of Windows Security includes a security feature that protects your computer from ransomware attacks. It’s a very reliable security solution that provides real-time antivirus protection.

However, Windows Security is not completely free from flaws, and users frequently report problems while using it. For example, many users report that it does not open at all.

List of 7 Best Methods to Fix Windows Security Not Opening on Windows 11

So, if you are experiencing such problems, you have landed on the right page. In this article, we will share a step-by-step guide on how to fix Windows Security not opening or working on Windows 11.

1. Repair Windows Security

In this method, we will repair the Windows Security app to fix Windows Security not opening issue. Here’s what you need to do.

1. First, click on the Windows 11 Start Menu and type in Windows Security.

2. On the right pane, click on App Settings.

3. Now scroll down and click on the Repair button as shown below.

Now, wait until the process completes. Once completed, you need to run the app to check if the program persists.

2. Reset Windows Security App

In this method, we will reset the Windows Security app to fix Windows Security not opening or working on Windows 11. Here’s what you need to do.

1. First, click on the Windows 11 Start Menu and type in Windows Security.

2. On the right pane, click on App Settings.

3. Now scroll down and click on the Reset button as shown below.

4. Next, follow the on-screen instructions to complete the reset process.

That’s it! You are done. This is how you can reset the Windows Security app on Windows 11.

3. Restart the Security Center Service

For those who don’t know, Security Center is a Windows service that runs every time your PC boots. Sometimes the service fails to start and leads to Windows Security not opening problem. Hence, we need to restart the security center service to fix Windows Security not opening problem.

1. First, press the Windows Key + R button to open the RUN dialog box. On the RUN dialog box, type in services.msc and hit the Enter button.

2. On the Windows services, find the Security Center service.

3. Right-click on the Security Center and select Restart.

That’s it! You are done. This is how you can fix Windows Security Not opening problem on Windows 11.

4. Run an SFC Scan

System file corruption is another reason behind Windows Security not opening problem. Hence, we need to run an SFC scan to fix the corrupted system files. Here’s what you need to do.

1. First, open Windows Search and type in Command Prompt.

2. Right-click on the Command Prompt and select ‘Run as administrator’.

3. On the Command Prompt, enter sfc /scannow

4. Now, wait until the process completes. If Windows detects any problem, it will automatically fix it.

That’s it! You are done. This is how you can run the SFC command to fix Windows Security app not opening or working problem on Windows 11.

5. Uninstall Other Antivirus Program

Both Windows 10 and Windows 11 don’t allow you to run two different antivirus programs simultaneously. So, if you are using any antivirus program, you need to disable it.

If disabling other antivirus programs didn’t help, you need to uninstall it from your system. Once you’ve uninstalled other security programs, you need to check if Windows Security is opening or not.

6. Disable the Startup Program

Apart from the antivirus program, several types of third-party apps & services can interrupt the functioning of Windows Security. In order to resolve this issue, we first need to find and disable the problematic startup app.

1. First, press the Windows Key + R button to open the RUN dialog box. On the RUN dialog box, enter msconfig and hit the Enter button.

2. Select the Services tab on the System Configuration pop-up, as shown below.

3. Now check the box behind ‘Hide all Microsoft Services‘ and click on the Disable All button.

4. Next, switch to the Startup tab as shown below. Next, click on the Open Task Manager link.

5. Under the Startup, select a program and click on the Disable button. You need to repeat this step until you disable all the programs.

After making the changes, restart your Windows 11 PC. Your PC will restart without any third-party app. If the Windows Security opens after the restart, you need to check your recently installed apps & programs.

7. Update Windows 11

Since Windows 11 updates were supposed to bring new features, bug fixes, and improve security, keeping the operating system updated becomes essential.

It’s possible that the Windows Security app is not opening due to an existing bug, and Microsoft has fixed it with a system update. So, it’s recommended to update Windows 11 to fix bug-related problems.

To update Windows 11, open Settings > Windows Update and click on the Check for Updates button.
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