How to Start the HTTPS Port for Your ASP.NET MVC Application

When we run our ASP.NET application from the command line, we see that it only starts the HTTP port:

info: Microsoft.Hosting.Lifetime[14]       Now listening on: https://localhost:5155 info: Microsoft.Hosting.Lifetime[0]       Application started. Press Ctrl+C to shut down. info: Microsoft.Hosting.Lifetime[0]       Hosting environment: Development info: Microsoft.Hosting.Lifetime[0]       Content root path: C:\Users\jg\source\repos\WebApplication1\WebApplication1

However, if we start the same application inside Visual Studio, we also get the HTTPS port:

info: Microsoft.Hosting.Lifetime[14]       Now listening on: https://localhost:7150 info: Microsoft.Hosting.Lifetime[14]       Now listening on: https://localhost:5155 info: Microsoft.Hosting.Lifetime[0]       Application started. Press Ctrl+C to shut down. info: Microsoft.Hosting.Lifetime[0]       Hosting environment: Development info: Microsoft.Hosting.Lifetime[0]       Content root path: C:\Users\jg\source\repos\WebApplication1\WebApplication1

This difference comes from a change in the default behaviour in .Net. Since .Net 7 the dotnet command only starts the first configuration in our launchSettings.json file.

To get the same behaviour on the command line, we need to add **--launch-profile https** as a parameter:

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dotnet run --launch-profile https

info: Microsoft.Hosting.Lifetime[14]       Now listening on: https://localhost:7150 info: Microsoft.Hosting.Lifetime[14]       Now listening on: https://localhost:5155 info: Microsoft.Hosting.Lifetime[0]       Application started. Press Ctrl+C to shut down. info: Microsoft.Hosting.Lifetime[0]       Hosting environment: Development info: Microsoft.Hosting.Lifetime[0]       Content root path: C:\Users\jg\source\repos\WebApplication1\WebApplication1

I hope this helps when you search for the missing HTTPS port of your .Net web application.