The exe file is probably not signed with a digital certificate
Yeah, but if flags as "Trojan.Heur!.02252823" the Security vendor flags it unsafe due to the unsigned exe. This happens with other exe format files too. Here's a example: You are installing google chrome, it's installer opens with no issues. You then install the demo for choicer voicer, your windows defender flags it because it has a unknown publisher. Check it with virus total and you get "Trojan.Heur!.02252823". You wonder why? It's not signed. What's a digital certificate? A digital certificate is a paid/free signature to provide that proves the application is virus-free and a proved app. There's your reason.
so if you guys mean the 0.5.2 version, i had the same issue there but just checked a mark and let it pass the windows defender. After that it Started up with no Problems, i did ran a Anti virus after that and it told me i had 0 viruses so I think its what lurins told before but im no Expert im just here to tell u what ive done and it worked so yea hope that helps.