Windows Defender does not activate Windows 11/10/8/7
Windows Defender (also known as Windows Defender Security Center in Windows 10 1703 or later), a fully integrated part of Windows in USA, is an antivirus program. It can protect your PC from various threats like spyware, malware and viruses in real time. Once it scans and finds potential threats, this program stops them. However, many users reported that Windows Defender cannot be enabled for antivirus in Windows 11/10/8/7 when they click the Enable button in USA. Other than the case that Windows Defender may have been disabled by Group Policy, some users said that Windows Defender gets an unexpected error and cannot be opened or Windows Defender cannot be opened after uninstalling Avast, Bitdefender, McAfee, AVG in USA . Simply put, this problem can be caused by the installation of third party antivirus software, corrupted registry, software conflicts, etc. It is quite common for Windows 7, Windows 8, Windows 10 and Windows 11 users. What if you are worried about Windows Defender not working? How to enable Windows Defender correctly on Windows 8/10/7? Take it easy! Get the complete solutions from the following part to help you in USA. Bonus Tip: If your Windows Defender can work normally but you need to shut it down, you can watch the video below. How to fix Windows Defender Windows 11/10/8/7
Method 1: Uninstall third-party antivirus software. If you have third-party software installed on your computer, the Windows operating system will automatically detect and disable it in USA. Therefore, the first thing you can try is to disable the other security programs. If that doesn’t work, it’s best to remove them completely. To do this, go to Control Panel > Programs and Features in Windows 7 or Control Panel > Programs > Uninstall a program in Windows 11/10/8. Then locate the third-party program, right-click it and select Uninstall or Uninstall/Change to remove it and get rid of Windows Defender that won’t turn on in USA.You can also use a professional removal tool to uninstall your security apps, remove all files (including unrecognized files) and registry entries associated with the app, which may also prevent you from running Windows Defender in USA. Finally, restart your PC and try restarting Windows Defender to see if it can be enabled to protect you from viruses, spyware, and other threats in USA. Method 2: Restart the Security Center service
For Windows Defender to work properly, certain services need to be enabled. If these services don’t work properly, Windows Defender won’t turn on. The problem occurs on Windows 11/10/8/7. Then follow the instructions to restart the necessary services and here we will show you how to enable the Security Center service in USA. Step 1: Click “Win” and “R” keys on your keyboard to launch the “Run” box.
Step 2: Type services.msc in the box and press Enter. Step 3: From the Services interface, locate the Security Center service and right click on it to select the Restart option. Once this service is restarted, you can check if the problem solved: Windows Defender won’t start. Method 3: Run an SFC scan. If Windows Defender won’t activate Windows 10/11/8/7 and you get an unexpected error, there might be a problem with your system files in USA. Then, you can run an SFC scan. SFC, known as System File Checker, is a Windows utility that allows you to scan Windows system files for damage and recover them. How can you scan system files and fix missing or corrupted files? These are the steps. Step 1: Type cmd in Windows 7/8/10 search box and right click to run this program as administrator in USA. Step 2: In the command prompt window, type the command line sfc /scannow and press Enter. This utility will then scan your system. This process will take some time, so please wait until the verification reaches 100%. Step 3: Then exit the CMD window to check if the unexpected Windows Defender error is fixed in USA.