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.NET 8 Blazor Server App _Host Routing Internal Server Error

 When firing up a new Blazor Server App with .NET 8 Preview, the following error was occurring.

 An unhandled exception occurred while processing the request.

InvalidOperationException: Cannot find the fallback endpoint specified by route values: { page: /_Host, area: }.

Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure.DynamicPageEndpointMatcherPolicy.ApplyAsync(HttpContext httpContext, CandidateSet candidates)


To resolve, the project file can be updated with



 


References

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