I can provide you details where to get a digital code certificate for your desktop application (.exe)
The most cheapest was 100$ or less, I'm sure of this.
Even you have the most expensive certificate you must be rated up in IE of there smartscreen that enables your certificate common to users.
So in that matter, you can buy a cheap certificate, the important is you have a digital certificate from you application or .exe.
I will provide you the website which you will buy the certificate for less than 100$
I will provide you the steps to succeed making a digital certificate for your application.
With that effort, I bid only 50$
Message me,
thanks