Kestrel Server Unable to Start


I have a strange issue going on regarding Kestrel on my machine. I am currently trying to develop a ASP Net Core application using razor pages for a project I am working on. I am new to development in ASP Net Core entirely and am currently trying several tutorials to build my knowledge. Every time I attempt to troubleshoot using Kestrel rather than IIS, Kestrel is unable to start. Weirdly, I went with an older version of Asp Net Core application and the problem went away. However, I would prefer to use the most up-to-date and therefore longest supported version. I just started a brand new web app while following this tutorial:

When they run their app at the 34minute and 50 second mark, i get this error:

Does anyone know what is going on here? I have verified that nothing is bound to the port it is trying to use which appears to have been a common issue for others. Any help would be tremendous.

Try opening an issue on the dotnet/aspnetcore repository?

I have done that now, thanks for the suggestion!

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