While working through the Create a web API with ASP.NET Core tutorial, I hit a snag with the certs.

When I run dotnet dev-certs https, I receive A valid HTTPS certificate is already present. And it is, expiring in 2024.

But when I run, I receive: Unable to configure HTTPS endpoint. No server certificate was specified, and the default developer certificate could not be found or is out of date.

How do I configure the WebAPI program to use a cert in the Keychain?

I haven’t done any configuration to the program–I am trying to stick close to the tutorial. But this is what dotnet creates:

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();