Windows 10’s Windows Security Center has been a reliable help to users in need of security, but lately it isn’t opening. If your firewall is up and running properly without any issues, chances are the issue lies within the registry.

Windows 11's Security center not opening? Try these fixes


Loredana Harsana (Loredana Harsana)

Expert in Windows and Software

Loredana is a dedicated writer who is fascinated by computer software and technology. She began blogging about smartphones when the Samsung Galaxy S II was the most popular device on the market, and… Read more

  • The Security Center in Windows 11 isn’t launching, according to users. This problem might be linked to third-party antivirus software.
  • The utility might be reinstalled using PowerShell as a first step.
  • Your computer’s default Windows Security may not be sufficient, necessitating the usage of a suitable third-party antivirus.



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Windows Security, commonly known as Windows Defender, becomes the default antivirus and security solution when you install Windows 11. It is one of the most powerful medicines available, and it works in the overwhelming majority of cases.

Nonetheless, one of the most commonly reported issues is that Windows Defender does not launch or perform as intended after an update or at random.

When you try to enable Windows Security, you could get a slew of strange error warnings. It could suggest that you install a new program in order to access the Windows Defender link, for example.

The window appears for a split second before vanishes completely. If restarting your computer does not cure the problem, use the troubleshooting options suggested below. We’ll start by learning how Windows Defender works, then move on to the remedies.

What is the purpose of Windows Defender?

Microsoft’s Windows Defender has nearly caught up with the top free antivirus products by delivering great automated malware protection while also having a minimal effect on system performance and a surprising amount of associated bonus features.1640783741_381_Windows-11s-Security-center-not-opening-Try-these-fixes

Scheduled scans are inconvenient for many users, and there is no protection for web browsers other than Edge or Internet Explorer. A separate password manager and file shredder are also unavailable.

What you see is precisely what you get with Windows Defender. Upgrades do not allow for the enhancement of protection or the inclusion of functionality. When considering the whole Windows Security suite, it includes a firewall, drive-level encryption, and even a gaming mode.

However, it still lacks capabilities such as a file shredder and access to a virtual private network that third-party antivirus companies provide as incentives (VPN).

Furthermore, Windows Defender delivers world-class malware protection, making it a convincing argument for not using a third-party antivirus program to replace it.

Its primary flaws are that some of its defensive actions, such as scheduling scans, are difficult to set up and that some of the associated Windows defenses are only available for Microsoft’s own browsers, both of which are minor negatives.

What should you do if Windows Security in Windows 11 won’t open?

1. Fix the app.

  1. To enter the Settings app, press Windows key + I, then choose Apps, then Apps & features.1640783741_63_Windows-11s-Security-center-not-opening-Try-these-fixes
  2. When you’re in the Apps & Features window, type Windows Security into the search field, then click the three-dot menu next to it, then Advanced options.1640783742_973_Windows-11s-Security-center-not-opening-Try-these-fixes
  3. Scroll down to the Reset section, and then select the Repair button. 1640783742_820_Windows-11s-Security-center-not-opening-Try-these-fixes

Allow the Repair procedure to finish before rebooting your computer to guarantee that the changes you made are implemented. By restarting Windows Security, you may see whether its functionality has been restored.

2. Restart the application

  1. To enter the Settings app, press the Windows key + I, then choose Apps, then Apps & Features.1640783741_63_Windows-11s-Security-center-not-opening-Try-these-fixes
  2. When you’re in the Apps & Features window, type Windows Security into the search field, then click the three-dot menu next to it, then Advanced options.1640783742_973_Windows-11s-Security-center-not-opening-Try-these-fixes
  3. Scroll down to the Reset area, and then select the Reset button.1640783743_391_Windows-11s-Security-center-not-opening-Try-these-fixes

3. Execute SFC

  1. To enter the Search bar, press Windows + S, then type cmd, then right-click on the most relevant result to execute it as an Administrator.1640783743_590_Windows-11s-Security-center-not-opening-Try-these-fixes
  2. Press Enter after typing or pasting the following command: sfc /scannow sfc /scannow sfc /s1640783744_348_Windows-11s-Security-center-not-opening-Try-these-fixes

Because the procedure may take some time to complete, you may need to restart your computer. SFC will detect and repair damaged files and directories automatically.

4. Execute DISM

  1. To enter the Search bar, press Windows + S, then type cmd, then right-click on the most relevant result to execute it as an Administrator.1640783743_590_Windows-11s-Security-center-not-opening-Try-these-fixes
  2. Enter the following instructions after typing or pasting them: ScanHealth DISM /online /Cleanup-Image DISM /Online /Cleanup-Image /RestoreHealth DISM /Online /Cleanup-Image /RestoreHealth1640783744_385_Windows-11s-Security-center-not-opening-Try-these-fixes

Continue to be patient until the process is finished. Be advised that the procedure might take up to 10 minutes to finish. Once you’ve completed this step, restart your computer to ensure the changes take effect.

5. Use the PowerShell command to reinstall

  1. To enter the PowerShell interface, right-click on the Start icon and choose Windows Terminal (Admin).1640783745_788_Windows-11s-Security-center-not-opening-Try-these-fixes
  2. Enter or paste the following command, then hit Enter to execute it: Unrestricted Set-ExecutionPolicy Get-AppXPackage -AllUsers | Foreach Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)AppXManifest.xml” Get-AppXPackage -AllUsers | Foreach Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)AppXManifest.x 1640783745_630_Windows-11s-Security-center-not-opening-Try-these-fixes

6. Turn off your antivirus software.

  1. Right-click on your antivirus icon and choose Avast shields control, then Disable for 10 minutes from the expand arrow on your taskbar.1639142012_661_Xbox-controller-not-recognized-in-Windows-11-Try-these-fixes
  2. If you have other antivirus applications installed, you may temporarily deactivate the app by following the same or similar methods as before.1639581033_485_Installer-encountered-an-unexpected-error-2203-in-Windows-11

Below are two links to antivirus options that are compatible with Windows 11 and will cause little to no issues.

Is Windows Defender up to the task?

Windows Defender has gone a long way in terms of cybersecurity features since its beginnings. Defender used to be terrible, but Microsoft has recently improved it to the point where it is now a decent free antivirus.1640783747_994_Windows-11s-Security-center-not-opening-Try-these-fixes

Defender now incorporates sandboxing and cloud-based malware detection, resulting in improved overall protection and faster detection of threats than ever before.

Microsoft’s Defender is capable of detecting malware files, preventing exploits and network-based assaults, and warning phishing websites, among other things.

It also includes parental controls such as content filtering, use restrictions, and location tracking, as well as simple PC performance and health monitoring.

Users are wondering whether they can depend on Windows Defender alone to protect their PCs now that it has all of these useful features, or if they will need to use a third-party antivirus product in addition.

The reality is that Microsoft Defender is on the brink of competing with third-party Internet security suites more than ever before. However, it is still insufficient.

Defender is certainly a free download, but there’s a reason why internet security packages are so pricey, not least because Microsoft isn’t in the cybersecurity business.

As a result, you should read our article on the five best antiviruses for Windows 11 to protect your computer’s security.

Alternatively, you may read our post on 10 of the best antiviruses for Windows 11 with minimal CPU utilization.

Finally, if you run into any other issues with Windows Security, we’ve developed a guide with solutions if Windows Defender isn’t operating correctly.

Let us know which approach worked best for you and which antivirus program you prefer in the comments area below.


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Frequently Asked Questions

Why cant I turn on my Windows Security Center?

A: Windows Security Center is designed to protect your computer from security threats, malware and viruses. Unfortunately due to some software conflicts on the PC that you are using it cannot be turned on.

How do I open Security in Windows 11?

A: The best way to open Security in Windows 11 is by clicking the start button and typing secpol.msc into the search bar. This will bring up a list of sub folders that are available when you click on it, which includes security options.

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