Windows 10 has built-in integration with Windows Defender security apps since it was released, but many users don't notice it at all. To make security more visible, Microsoft Windows 10 Anniversary Update lists the Windows Defender icon in the taskbar notification area for easy user use.
Disabling the taskbar icon does not affect the normal functioning of Windows Defender, it will still protect the system in the background, and you can normally go through the "Set up"-"Update and security"-"windows defender" or search the Start menu for Windows Defender open it. Once malware is detected, there is a notification prompt. In short, we just hide the icon of its taskbar, its original function is as usual. The only thing you need to be aware of is that with the taskbar icon we can quickly determine if Windows Defender is running silently in the background. The taskbar icon will not be displayed if you have other third-party antivirus software installed, and the Windows defender"Limited periodic scan feature is not enabled.
Hide Windows Defender taskbar icon
Users are not currently able to choose to show or hide the Windows Defender icon by right-clicking the taskbar, but can be turned off by disabling the "windows Defender notifiction icon" entry in the Task Manager "-" startup tab Windows Defender taskbar icon starts with system logon.
Disabling this entry will only hide the display of the icon in the Windows 10 taskbar notification area, and Windows Defender will still boot with the system and run in the background. For professional users with certain technical capabilities, you can also use Autoruns to disable Windows Defender notifiction icon to load with the system login.
The above changes will only take effect the next time the user logs on to the system, if you do not want to log off or restart the system, kill the process directly in the Task Manager is OK.
Restore display Windows Defender taskbar icon
If necessary, we can also restore the Windows Defender icon in the taskbar at any time, and re-enable the "windows Defender notifiction icon" entry in the Task Manager "-" startup tab.
If you want to not log off the system immediately, you can execute the following Exe file in "Run" (Windows + R):
"C:/Program files/windows Defender/msascuil.exe"
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Win10 How to hide the Windows Defender taskbar icon