How to Fix Windows Security Issues in Windows 11

Aamir Khan

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If the protection of our system is not working correctly, we can face many security issues, and our system, files, and important data are at high risk. So we should have made it active to protect our system from attackers and malware. In many cases, Windows 11 security didn’t work correctly, and we faced many issues. However, there are ways to fix these security issues. In this article, we will explain how to resolve these problems and make your Windows 11 PC more secure.

Before going into fixing security issues, we recommend you create a backup image of your windows 11. If something goes wrong, there is no risk of losing your data.

Windows Defender not Working Windows 11

Windows security is an excellent software that comes by default in almost all versions of windows. It is fantastic software against viruses and malware. In many cases, it works correctly, but in very few cases, it doesn’t work correctly and causes severe problems to our system.

If it is not working on your device, you don’t need to download it manually in Windows 11; you have to fix security issues in windows 11 from the windows setting.

Press the windows button and search for Windows Defender here. And then  Open Windows Security.

How to fix windows security issues by simple settings

In many cases, this method doesn’t work. Consequently, you may face an error and won’t be able to open or activate it. Moreover, you might encounter another issue where Windows 11 is missing Windows Defender.Sometimes you get an error saying that “unexpected error,”; or sometimes saying “you will need a new app to open windows defender”; many more mistakes you will face here. Still, your windows defender isn’t working, and you can’t activate it, which is still an issue.

Fix security issues in windows 11, like “Windows security is not working,” is much crucial as our system and all other data are at risk and can be attacked by hackers if we are online for a long time, as also as other viruses and malware locally in our remote system can affect worse our system. By the way, fixing this error is not too complex a task; it is simple and easy to fix this error.

How to “Fix Security Issues in Windows 11

Many methods exist to fix this error and activate Windows Defender for our PC’s security and best performance. For instance, we can try a few troubleshooting steps or use a third-party antivirus software as an alternative. Additionally, we can check for any pending Windows updates, as they may contain fixes for this issue.

1- Set Date and Time

Date and Time is the significant and prevalent issue why your Windows Defender is not working. So if your system date and time are incorrect, it will not work correctly, as most system features are related to the Date and Time. So here is described how to set the Date and Time.

1: Click the Start icon from the Taskbar in Windows 11 and choose Settings to open this app.

2: Move to the Time & language tab on the left side and click Date & Time in the right pane.

3: Click the Change button to set the correct Time and Date.

fix windows security issues by changing date and time

2- Restart Security Center Service

If your defender is still not working correctly, then check that services for security are generally working in windows 11 by following the method

1: To get the Run dialog, press Win + R.

2: Type services.msc into the textbox and click OK to open Services.

3: Go to find the Security Center service from the right pane, right-click it and choose Restart.

Besides you check that these services are running correctly, you should also have to check the following services that these are also working correctly;

  • Defender Advanced Threat Protection in Windows
  • Windows Defender Firewall
  • Defender Antivirus Network Inspection Service in Windows
  • Windows Defender Antivirus Service
Fix security issues in windows 11 from security center service

4: Double-click each service to open the Properties window and set the Startup type to Automatic.

After that, go to check that windows security is usually working. If not, then try other methods that are given below.

Update Windows 11

As Windows 11 is a newly released OS from the Microsoft Windows platform, besides that, there are many bugs; they are trying to remove all these bugs and update it to the latest version. If your Windows 11 is missing the Windows Defender, try to update your windows 11 to the newest version and check whether your issue is resolved.

1: Click Start > Settings to get Windows 11 Settings.

2: Go to Windows Update in the left sidebar and click Check for updates.

3: If the system checks for some available updates, download and install them on your Windows 11 PC. Then, you may be able to run Windows Defender for PC protection against viruses and threats.

Fixing windows 11 security issues by updating the system

Now, after installing the windows 11 update and restarting your system, if windows defender is still not working, try these given methods.

Remove Third-Party Security Software

Sometimes you have installed some Third-Party Security Software for your protection, but we recommend you use windows defender. Given is the list of some third-party security software for windows 11

  • TotalAV Antivirus – best antivirus software for Windows 11.
  • Bitdefender Antivirus – all the essentials for Windows 11.
  • Norton Antivirus – solid all-around Windows 11 antivirus.
  • Surfshark Antivirus – excellent antivirus for online safety.
  • Avira Antivirus – beginner-friendly, powerful antivirus.

If your Windows 11 defender is not working, and you have installed any security software, uninstall it, reboot your system, and check whether it is working correctly.

Fixing through CMD

This is an easy and time-saving process to fix the issue of not working Windows Defender. Specifically, performing an SFC scan using cmd is a straightforward way to fix this error. In addition, this method is a built-in feature of Windows and does not require any third-party software installation. Therefore, it’s a convenient and effective way to troubleshoot the problem. A system File Checker(SFC) is used to check the faulty system files running in the background and fix the corrupted files. If the defender file is corrupted, then we can solve this issue by this method quickly.

1: Type cmd to the search box and right-click on Command Prompt to choose Run as administrator.

2: Type in sfc /scannow and press Enter to execute this scanning task.

Fixing windows 11 security issues by CMD

After completing the scanning process, restart your pc and check if the windows defender works well.

Perform a Clean Boot

If you are running third-party software that interferes with the smooth working of the Windows operating system, it can lead to the improper working of Windows Defender and other OS components. Consequently, your PC may become vulnerable to security threats. Therefore, it’s essential to identify and remove any conflicting third-party software to ensure the optimal performance of your system’s security features.

1: Press  Win + R, type msconfig, and click OK.

2: Under the Services tab, tick the Hide all Microsoft Services checkbox.

Clean boot to fix windows 11 security issues

3: After that, click Disable all the services except Microsoft services.

4: Go to the Startup tab and click Open Task Manager.

5: Choose programs one by one and click Disable to disable them to fix Windows Security not working in Windows 11.

Fix by Changing in Registry Settings

If the defender is still not working or starting after trying many solutions, you should fix windows defender by making changes in your registry setting. Remember to back up the registry setting to avoid corruption in windows 11 due to any mistaken operation.

  • Type regedit into the search box and click Registry Editor.
  • Follow this path  Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender.
  • Locate DisableAntiSpyware in the right pane. If you can’t find it here, right-click Windows Defender and choose New > DWORD (32-bit) Value to create it.
  • Double-click this key and set its value data to 0.
Fixing windows 11 security issues by registry settings

After saving it or choosing okay, restart your pc and check whether your windows defender is working correctly.

Repair or Reset Windows Security

After trying so many solutions and your defender or Windows security is still not working, there is one but not last solution to try: reset the windows security or repair it.

1: Launch the Windows Settings app by pressing Win + I.

2: Click App > App & features.

3: Scroll down to find Windows Security, click the three-dot menu, and choose Advanced options.

4: Go to the Reset section in the new window, and click Repair to repair it. If this cannot work, click Reset to reset this app.

Fixing windows 11 security issues by reapairing your security app

Reset PC to origianl setting

If you are tired of trying the above methods and your Windows defender is still not fixed, try this last method and reset your PC to its original factory setting. Go to Settings > System > Recovery > Recovery options > Reset this PC to do this. Follow all the instructions on the screen and finish resting your PC.

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