Failed to determine the https port for redirect

Question

I am new to ASP.NET and programming too. I am using Visual Studio 2022 v17.5 and ASP.NET Core 6 for building a web application.

I am in the development environment. Initially all was going well but suddenly it starting misbehaving by showing

Warning: Failed to determine the https port for redirect

The web page loads but doesn't respond to any click and browser reload animation also keeps on revolving.

I searched the internet but failed to find any fix. Please guide to fix this error and thanks in advance for any solution.

Answer 1

Here is an answer from MS Docs:

A port must be available for the middleware to redirect an insecure request to HTTPS. If no port is available:

• Redirection to HTTPS doesn't occur.
• The middleware logs the warning "Failed to determine the https port for redirect."

Specify the HTTPS port using any of the following approaches:

• Set HttpsRedirectionOptions.HttpsPort.

• Set the https_port host setting:

  • In host configuration.

  • By setting the ASPNETCORE_HTTPS_PORT environment variable.

  • By adding a top-level entry in appsettings.json:

    "https_port": 443,

• Indicate a port with the secure scheme using the ASPNETCORE_URLS environment variable. The environment variable configures the server. The middleware indirectly discovers the HTTPS port via IServerAddressesFeature. This approach doesn't work in reverse proxy deployments.

• The ASP.NET Core web templates set an HTTPS URL in
  Properties/launchsettings.json for both Kestrel and IIS Express.
  launchsettings.json is only used on the local machine.

• Configure an HTTPS URL endpoint for a public-facing edge deployment
  of Kestrel server or HTTP.sys server. Only one HTTPS port is used by the app. The middleware discovers the port via
  IServerAddressesFeature.