

The above registry setting corresponds to the “ Prevent bypassing of Microsoft Defender SmartScreen warnings about downloads” GPO under the following branch: Computer Configuration → Administrative Templates → Microsoft Edge → SmartScreen settings In Windows 10 Pro and higher, you can configure the above setting via Group Policy Editor if you have added Edge ADMX files already.

Workaround for standalone systems is available at the following link.

On standalone systems, Edge ignores this policy. Note: This setting is available only on Windows instances that are joined to a Microsoft Active Directory domain, Windows 10 Pro or Enterprise instances that enrolled for device management, or macOS instances that are managed via MDM or joined to a domain via MCX.

Prevent Download of Unsafe Files Blocked in Edge For Microsoft Edge (Chromium) This article explains how to prevent users from downloading the ‘unsafe’ file on Microsoft Edge and Microsoft Edge Chromium. “Download Unsafe File” option exists by default. Still, users can download the blocked file manually by opening the Downloads panel, right-clicking on the blocked file, and choosing “Download unsafe file” option in the right-click menu. Likewise, on Microsoft Edge (legacy), every time when a file download is blocked, the following message shows up: "filename" is unsafe to download and was blocked by SmartScreen Filter. However, Edge Chromium allows users to download the unsafe file regardless of the warning, by clicking on the “Keep” option in the Downloads flyout.
