Block at First Sight (BAFS) demonstration

Block at First Sight, is a feature of Microsoft Defender Antivirus cloud-delivered protection that provides a way to detect and block new malware within seconds. You can test that it is working as expected by downloading a fake malware file.

Scenario requirements and setup

  • Windows 10 Anniversary update (1607) or later

  • Cloud protection is enabled

  • You can download and use the Powershell script to enable this setting and others


    You should see your browser ask to save this file in a few seconds.


Follow the instructions in Block at first sight demo.

See also

Block at First Sight

Microsoft Defender for Endpoint - demonstration scenarios