You can follow this post - How to Remove Remnants of Uninstalled Software? Try These Ways to remove them. Tip: A simple uninstallation sometimes cannot completely remove programs and some entries are saved in registry.
Then, you may be able to run Windows Defender for PC protection against viruses and threats.
Step 3: If the system checks for some available updates, download and install them on your Windows 11 PC.
Step 2: Go to Windows Update in the left sidebar and click Check for updates. Step 1: Click Start > Settings to get Windows 11 Settings interface. To fix it, you can update it to the latest version to see if the issue is resolved. Sometimes Windows Defender Windows 11 missing or Windows 11 Security not working appears due to the bugs in the certain Windows versions. If it is still not working as normal, try other methods below. Step 4: Double-click each service to open the Properties window and set the Startup type to Automatic.Īfter that, go to check if Windows Defender can work.
Step 3: Go to find the Security Center service from the right pane, right-click it and choose Restart.īesides, you should also check these services - Windows Defender Advanced Threat Protection, Windows Defender Firewall, Windows Defender Antivirus Network Inspection Service, and Windows Defender Antivirus Service and make sure they are running. Step 2: Type services.msc into the textbox and click OK to open Services. Step 1: To get the Run dialog, press Win + R. To fix Windows 11 Windows Defender not working, make sure the service is running properly. Windows Defender service not running may be another reason why Windows Security is not working or operating in Windows 11. Tip: In addition, you can set date and time in other methods, and here is a related article - How to Change Date and Time & Sleep Time on Windows 11. Step 3: Click the Change button to set the correct time and date. Step 2: Move to the Time & language tab on the left side and click Date & time in the right pane. Step 1: Click the Start icon from the Taskbar in Windows 11 and choose Settings to open this app. So, make sure your date and time are set correctly. Fixes for Windows 11 Windows Defender Not Working Set Date and Time CorrectlyĪ common reason why Windows Defender won’t start/work is an incorrect time and date since most system features depend on time and date. Fortunately, it is not a difficult task to solve this issue if you follow the methods below. Related article: Fix Windows Defender Error: This Program’s Service Has Stoppedįixing Windows Security not working in Windows 11 is an urgent thing since viruses and malware may affect your computer. No matter which situation you have, you cannot use Windows Defender for PC protection as normal. Sometimes you get a message saying “unexpected error” sometimes you get a pop-up saying “ you’ll need a new app to open this windowsdefender link”. However, due to some reason, you may find Windows Defender is not working or starting/turning on in Windows 11 or Windows Defender Windows 11 missing. ( Related article: How to Enable or Disable Microsoft Defender in Windows 11) Just press Win + I to open Windows 11 Settings, go to Privacy & security > Windows Security > Open Windows Security. To use it, you won’t need to download Windows Security in Windows 11 but you are required to enable it in Settings. As one of the best antivirus apps, it can run properly in most situations to protect your PC from threats like viruses, spyware, malware attacks, and more.
Windows Security, usually known as Windows Defender, is an excellent antivirus program that comes with Windows 11 by default. Fixes for Windows 11 Windows Defender Not Working.Windows Defender Not Working Windows 11.