windows defender smartscreen prevented an unrecognized app from starting

Setting it to Warn and prevent bypass removes the Run anyway option. The relevant policy setting is Configure Windows Defender SmartScreen under Computer Configuration → Windows Components → File Explorer. To prevent the SmartScreen, you usually right-click on the file, click Properties, select the Unblock checkbox and click OK.īut if you have the Hide mechanisms to remove zone information policy located under the node User Configuration → Windows Components → Attachment Manager in the Group Policy Editor enforced, the Unblock option would be missing in the file’s properties tab.Īlso, the SmartScreen group policy can be configured such that you don’t get the Run anyway option, and the users can’t turn off SmartScreen via Windows 10 Settings UI. If you downloaded the file using Chrome or Chrome-based browsers, you’ll also see the ReferrerUrl and HostUrl data in the NTFS stream. Zone ID 3 represents the “Internet Zone”. Running this app might put your PC at risk. Windows SmartScreen prevented an unrecognized app from starting.

The warning reads Windows protected your PC. If the file has a bad reputation according to the Microsoft SmartScreen server, you’re adviced not to run the file, with an option to run the file anyway despite the warning.

Windows defender smartscreen prevented an unrecognized app from starting