Starting with Windows 10 Anniversary Update version 1607, Windows Defender will display Enhanced Notifications about malware detection & remediation, and all the activities that it is carrying out on your computer. The idea is to keep you informed at all times about the health status of your Windows PC, and you will see them pop up from the bottom right side of your screen.
If you were to open the Action Center, you would be able to see them there too.
These notifications also appear when manually triggered and scheduled scans are completed and threats are detected.
Turn on Enhanced Notifications in Windows Defender
If you wish to turn on the Enhanced Notifications on your Windows 10 PC, do the following.
From the Start Menu, open Settings > Update and Security, and click on Windows Defender in the left panel.
Here you will see the option to toggle the Enhanced notifications setting to On or Off using the slider button.
Toggling it to the On position will enable Enhanced Notifications in Windows Defender.
Mind you, even if you were to disable it, you would still get critical notifications about your system health that need your attention.
This feature is offered only when Windows Defender is enabled and is running as your mail real-time security software.
Windows Defender has become more powerful in Windows 10 v1607 and can be used as a dependable anti-malware in Windows 10. Most home users may not find it necessary to install a 3rd-party antivirus software on the computer.