Installer VIRUS ALERT

Microsoft offers a submission of a file for malware analysis to all developers. If your installer and application have been validated successfully, then Microsoft services will not issue virus alerts for that executable.
microsoft.com/en-us/wdsi/filesubmission

https://stackoverflow.com/questions/48946680/how-to-avoid-the-windows-defender-smartscreen-prevented-an-unrecognized-app-fro

Another interim solution is to have users right click Installer, go to Properties, then check Unblock