Smart Screen Filter issue

Hello experts.  My company has had an agricultural accounting application available for download for almost 15 years.  The application is code signed and we are a verified software publisher, however Smart Screen Filter suddenly informs potential downloaders that our application is "not commonly downloaded and may harm your computer".  Our application is geared for a very small market of grain producers, and is not downloaded by the masses.  It is my understanding that there is a list of commonly downloaded programs, and we are not on it.  Hence the issue.  What if anything can we do besides having a valid signature certificate to make ourselves seem less hostile to Internet Explorer?  In my opinion this is unfair for the web browser to direct users away from our program without knowing what it does.  It is detrimental to our business.  Quite frankly it is an outrage.