My exe is detected as malicious by Chrome and some antivirusev

[crios890]

Hi, i made a program that should open all the content of a training course (videos, pdfs etc) and it is working. The problem comes when im trying to share it to the people that is doing the course, because some antivirus detects it as malicious (even google chrome think its malicious) , of course the program does not have any virus, i think its because is a self extractable ( i compiled it as .exe ).

What should i do ?, do i have to put any special option when compiling ?

[Shrek]

Put a digital certificate in the .exe and those warnings will go away.

[crios890]

Is there a way of getting a free certificate ? i tried making one with OpenSSL and signed the .exe but it says that the certificate is not trustable

[Shrek]

You get free ones for open source projects but these things are not expensive anyway and if your selling your application its really expected that you should have one.

[crios890]

Where can i buy a cheap one ? because most of them cost around 400 usd per year, and as a starting company its expensive since its only additional software for courses aimed to students