All headers enabled in Cors, no conflicts between WebConfig and WebApiConfig, why is my WebApi returning a 405 error?

Question

I tried the top answers in other posts with no success, it seems only GET and POST are allowed despite my best efforts. The only thing I can think of is an IIS issue? As you can likely tell I am new to this.

**Response Header**

Access-Control-Allow-Origin:* Allow:GET,POST
Cache-Control:no-cache
Content-Length:82
Content-Type:application/json; charset=utf-8
Date:Wed, 09 Mar 2016 13:49:26 GMT
Expires:-1
Pragma:no-cache
Server:Microsoft-IIS/10.0
X-AspNet-Version:4.0.30319
X-Powered-By:ASP.NET
X-SourceFiles:=?UTF-8BQzpcVXNlcnNcTWVcRGVza3RvcFxDb2RlXERldlxwbTJcUHJvcGVydHlNYW5hZ2VyMlxhcGlcdGVuYW50cw==?=

**Request Header**

Accept:application/json, text/plain, /
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8
Content-Length:105
Content-Type:application/json;charset=UTF-8
Host:localhost:62118
Origin:http://localhost:54633
Proxy-Connection:keep-alive
Referer:http://localhost:54633/
User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.75 Safari/537.36

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        // Web API configuration and services
        var cors = new EnableCorsAttribute(
              origins: "*",
              headers: "*",
              methods: "*"
          );

        config.EnableCors(cors);

        // Web API routes
        config.MapHttpAttributeRoutes();

        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );

        SetupAutomapper();

        var json = config.Formatters.JsonFormatter;
        json.SerializerSettings.PreserveReferencesHandling = Newtonsoft.Json.PreserveReferencesHandling.Objects;
        config.Formatters.Remove(config.Formatters.XmlFormatter);
        json.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
    }


    private static void SetupAutomapper()
    {
        Mapper.CreateMap();
        Mapper.CreateMap();
        Mapper.CreateMap();
    }
}

And my Controller

// PUT: api/Tenants/5
    [ResponseType(typeof(void))]
    public IHttpActionResult PutTenant(int id, TenantModel tenant)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        if (id != tenant.TenantId)
        {
            return BadRequest();
        }

        var dbTenant= db.Tenants.Find(id);

        dbTenant.Update(tenant);

        db.Entry(dbTenant).State = EntityState.Modified;

        try
        {
            db.SaveChanges();
        }
        catch (DbUpdateConcurrencyException)
        {
            if (!TenantExists(id))
            {
                return NotFound();
            }
            else
            {
                throw;
            }
        }

        return StatusCode(HttpStatusCode.NoContent);
    }

Lastly, web.config

Roman Marusyk · Accepted Answer

Try to change your config of IIS.

Open applicationHost.config in the %USERPROFILE%\Documents\IISExpress\config folder.
Find ExtensionlessUrl in handlers section
Add PUT to the verb attribute

Result should be like:

and

All headers enabled in Cors, no conflicts between WebConfig and WebApiConfig, why is my WebApi returning a 405 error?

Answers (1)

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