> https://github.com/dotnet/aspnetcore/blob/main/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWebCSharp.1/Properties/launchSettings.json#L12-L16 > > Seems that's the culprit (potentially) > > @DamianEdwards can you take a look? > The issue is that the generated template only contains the HTTP url, not the Http and Https combo The relevant commit de4d625c6d170156e07d77a9aa7c7a10a50adab9