

The Windows Defender summary notification is one of the easiest ways to tell that your PC is protectedĪnother common cause for Windows Defender not launching can be third-party antivirus. This happens because of Windows 10 updates or existing malware infections. For example, as with most other default apps on Windows 10, Defender may become corrupted over time. There are many possible causes for Windows Defender not launching. Fixed! Windows Security Not Opening in Windows 11.Turn On Windows Defender Using the Registry Editor Use the DISM Command To Repair System Images Temporarily Disable Your Third-Party Antivirus How To Fix Windows Defender Won’t Open in Windows 10.If you can’t open Windows Defender, or Windows Defender won’t launch at all, this article will help you fix the problem. It’s included to protect you from cyber threats like malware, hackers, and more. Windows Defender comes pre-installed on all Windows 10 systems. It’s a huge red flag if Windows 10’s built-in antivirus isn’t opening or won’t turn on at all. Some malware can even spread offline, only relying on file sharing. Whether you’re connected to a public WiFi or your private network, you’re vulnerable to a variety of attacks. Click on Virus & threat protection as shownĥ.Windows Defender won't turn on? This is a common problem.Īntivirus applications are essential to staying safe when browsing the internet. Please proceed to next step to enable Windows Defender, to keep your personal computer safe.Ĥ. No tick: No antivirus present and Windows Defender is not enabled in your computer. Enabling of Windows Defender is not necessary as your computer is protected by Windows Defender. Green tick: An antivirus program is present and running in your computer. On the Windows Security screen, check if any antivirus program has been installed and running in your computer. Scroll down and click Windows Security to open the application.ģ. Click the windows logo in the bottom left corner of the screen. The Start menu will pop up.Ģ. NOTE: Windows Defender cannot be enabled when another anti-virus is installed, e.g. You may learn more about Windows Defender from Microsoft website. Its' component includes anti-virus, anti-malware, firewall and more, to keep your personal computer safe. Microsoft Defender is a component of Microsoft Windows 10 to delivers comprehensive, built-in and ongoing security protections.
