ASP.Net Core API 无法使用 SSL 浏览器抛出 ERR_CONNECTION_RESET

Question

I'm building an API in Visual Studio using ASP.NET Core Web Application, but since a couple of days ago it doesn't work anymore. When I run the API from Visual Studio using IIS Express I get an error in the browser: "ERR_CONNECTION_RESET".

The application does work when I disable SSL, but it should (and before did) work with SSL enabled.

Things I've tried:

• Change port (within the correct range)
• Delete localhost certificate and repair Visual Studio, prompting the creation of a new SSL certificate
• Deleted the.VS file and restarted VS in administrator mode
• Delete applicationhost.config and restarted VS in administrator mode
• Created a fresh application with a working pre build WeatherAPI, but that has the same problem aswel
• Ran SSL Diagnostics using Jexus and got the following

System Time: 18/06/2020 14:40:58 Processor Architecture: AMD64 OS: Microsoft Windows NT 10.0.18363.0 Server Type: IIS Express SERVER SSL PROTOCOLS PCT 1.0: PCT 1.0 is not secure. OS default is used. You might explicitly disable it via registry. SSL 2.0: SSL 2.0 is not secure. OS default is used. You might explicitly disable it via registry. SSL 3.0: SSL 3.0 is not secure. OS default is used. You might explicitly disable it via registry. TLS 1.0: TLS 1.0 is not secure. OS default is used. You might explicitly disable it via registry. TLS 1.1: TLS 1.1 is not secure. OS default is used. You might explicitly disable it via registry. TLS 1.2: SChannel EventLogging: 1 (hex) To tune TLS related settings, please follow https://support.microsoft.com/en-us/kb/187498 or try out IIS Crypto from https://www.nartac.com/Products/IISCrypto/. Microsoft documentation on cipher suites can be found at https://docs.microsoft.com/en-us/windows/desktop/secauthn/cipher-suites-in-schannel. ----- [W3SVC/1] ServerComment: WebSite1 ServerAutoStart: True ServerState: Stopped BINDING: http *:8080:localhost

For what it's worth I've also checked for the subkeys through Regedit, but couldn't find the subkeys inside HKey_Local_Machine\System\CurrentControlSet\Control\SecurityProviders \SCHANNEL\Protocols\

I am completely at a loss what it could be

Edit: Tried it on another PC, on which it seems to work properly

Answer 1

According to the binding configuration from the report, there is no https binding in your project.

BINDING: http *:8080:localhost

Please ensure you checked the option of configuring HTTPS binding while creating the AspDotNET CoreAPI project.

This will add additional code snippets to Startup.cs file.

//Adding middlewares for redirecting HTTP request to HTTPS
            app.UseHttpsRedirection();

And additional HTTPS binding configuration in launchSettings.json file.

Besides, most of the browsers start to support TLS1.2 only, please ensure that TLS1.2 is not disabled.
Feel free to let me know if the problem still exists.