HideTrustIISCertificatePrompt?

I have seen some things online that suggest that you have to put in a registry key like so:

[HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\12.0\WebProjects]
"HideTrustIISCertificatePrompt"=dword:00000001

 
 

...to get out of repeatedly seeing this in Visual Studio:

This project is configured to use SSL. To avoid SSL warnings in the browser you can choose to trust the self-signed certificate that IIS Express has generated. Would you like to trust the IIS Express SSL certificate?

 
 

I only got the prompt once myself. I agreed in Visual Studio 2017 to set up some substitute certificate and that was enough.