Hello, we have an app built with PowerBuilder. Recently, we signed it using a new certificate issued by 'Buypass Class 3 CA G2 ST Business.' The certificate is valid, and we have installed it on our environments which use Windows 11. However, we are encountering an issue: when we attempt to open the app, we receive the following error message: 'Windows protected your PC / Microsoft Defender SmartScreen prevented an unrecognized app from starting. Running this app might put your PC at risk.' Previously, we used a different certificate, and the app worked fine. Could this issue be related to the app's SmartScreen reputation? Or something similar?
Windows Defender SmartScreen prevented an unrecognized app from starting despite being signed with a certificate.
Question Info
Last updated April 17, 2025 Views 110 Applies to: