405 Method Not Allowed wehn doing HTTP POST to ASp .Net Core 2.2 Web API

Question

I'm creating an ASP .Net Core 2.2 Web API, and am implementing a controller action which will be invoked via a POST. However, when I run it in Debug mode in Visual Studio 2017, and I call the endpoint using Postman, I get a 405 Method Not Allowed

I specified that I am doing this in debug mode in VS because I've seen a couple of posts online where people are getting this issue when deploying, and having to remove WebDAV from IIS or adding this:

<system.webServer>
  <modules runAllManagedModulesForAllRequests="false">
    <remove name="WebDAVModule" />
  </modules>
</system.webServer>

to their config.web

However, seeing as I am running from VS, it is using IIS Express, and there is no web.config file.

I haven't yet tried to publish the API, as it's not even working locally on my machine, so it feels wrong to publish something that's broken.

EDIT:

So my controller looks like this:

public class TestController : ControllerBase
{

    public TestController()
    {
    }

    [HttpPost]
    private void Post()
    {
        Console.Write("TEST");
    }
}

Where's your code? There's nothing wrong with POST, all sites use it unless they are read-only. Even the tutorials wouldn't work if forms couldn't POST to the server — Panagiotis Kanavos
Besides, ASP.NET Core doesn't use web.config unless it's hosted on IIS. The default servier is Kestrel — Panagiotis Kanavos
That's right, there is no web.config until you publish. That's why I can't even try the suggestion I've seen online about adding those lines to the web.config file. Regarding the code sample, well, there's not much to post...currently I have a controller with just one simple, parameterless action, which has "Console.Write("TEST"); in its body and nothing else. And it has the [HttpPost] decoration. If I change it to a [HttpGet] decoration, and do a GET request from Postman, then it works. — Fabricio Rodriguez
You don't need a web.config during debugging. Even after publishing it doesn't mean you need one. Kestrel doesn't need it. Post the code. — Panagiotis Kanavos

Fabricio Rodriguez Fabricio Rodriguez · Accepted Answer · 2019-02-07T13:08:56

As mentioned by the keen-eyed noobed, my problem was that my controller action was private and not public. Thanks again noobed.

405 Method Not Allowed wehn doing HTTP POST to ASp .Net Core 2.2 Web API

1 Answers