Absolutely. The only thing I've changed is adding .AddAzureBlobMediaFileSystem() and .AddAzureBlobImageSharpCache() per the instructions I found here.

To be clear, I'm running v12.3

namespace RedWingMusicRepair

{ public class Startup { private readonly IWebHostEnvironment _env; private readonly IConfiguration _config;

    /// <summary>
    /// Initializes a new instance of the <see cref="Startup" /> class.
    /// </summary>
    /// <param name="webHostEnvironment">The web hosting environment.</param>
    /// <param name="config">The configuration.</param>
    /// <remarks>
    /// Only a few services are possible to be injected here https://github.com/dotnet/aspnetcore/issues/9337.
    /// </remarks>
    public Startup(IWebHostEnvironment webHostEnvironment, IConfiguration config)
    {
        _env = webHostEnvironment ?? throw new ArgumentNullException(nameof(webHostEnvironment));
        _config = config ?? throw new ArgumentNullException(nameof(config));
    }

    /// <summary>
    /// Configures the services.
    /// </summary>
    /// <param name="services">The services.</param>
    /// <remarks>
    /// This method gets called by the runtime. Use this method to add services to the container.
    /// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940.
    /// </remarks>
    public void ConfigureServices(IServiceCollection services)
    { 
        services.AddUmbraco(_env, _config) 
            .AddBackOffice() 
            .AddWebsite()
            .AddDeliveryApi() 
            .AddComposers()
            .AddAzureBlobMediaFileSystem() // This configures the required services for Media
            .AddAzureBlobImageSharpCache() // This configures the required services for the Image Sharp cache
            .Build();
    }

    /// <summary> 
    /// Configures the application.
    /// </summary>
    /// <param name="app">The application builder.</param>
    /// <param name="env">The web hosting environment.</param>
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseUmbraco()
            .WithMiddleware(u =>  
            {
                u.UseBackOffice();
                u.UseWebsite();
            })
            .WithEndpoints(u =>
            {
                u.UseInstallerEndpoints();
                u.UseBackOfficeEndpoints();
                u.UseWebsiteEndpoints();
            });
    }
}

}

Thanks for responding, Stuart.

@john looks like you beat me to it. I'm seeing same errors on clean installs of 12.2 and 12.3 and I'm not using Azure Blob storage.

Yeah, that's about where I'm at. Even removing the references to both of those methods in AddUmbraco(), and ditching the connection string info, I get that error. Blowing it away and installing fresh seems to be my only option.

Related newbie question: should the Azure blob storage connection string information go in the appsettings.json or the appsettings.Development.json file?

I've actually got the blob storage connection in both AppSettings.json and an AppSettings.Production.Json which I don't think will do any harm.

From my understanding anything different which you put within the other AppSettings.Development.json file just overrides what's in the base AppSettings.json file if the same key exists.

Sorry couldn't be more help on the original question, but if I stumble across anything I'll be sure and post it.

No worries, @stuartpaterson. I sincerely appreciate the help! I'll be sure to post if I figure out what's going sideways for me.