Web API Put Request generates an Http 405 Method Not Allowed error

Question

Here s the call to the PUT method on my Web API - the third line in the method  I am calling the Web API from an ASP NET MVC front end      client BaseAddress is http   localhost CallCOPAPI    Here s contactUri     Here s contactUri PathAndQuery     And finally  here s my 405 response     Here s the WebApi config in my Web API project           public static void Register HttpConfiguration config                        config Routes MapHttpRoute                  name   DefaultApi                   routeTemplate   api  controller   id                    defaults  new   id   RouteParameter Optional                               config Routes MapHttpRoute                  name   DefaultApiGet                   routeTemplate   api  controller   action   regionId                    defaults  new   action    Get                     constraints  new   httpMethod   new HttpMethodConstraint  GET                    var json   config Formatters JsonFormatter              json SerializerSettings PreserveReferencesHandling   Newtonsoft Json PreserveReferencesHandling Objects              config Formatters Remove config Formatters XmlFormatter     I ve tried stripping down the path that gets passed into PutAsJsonAsync to string Format   api department  0    department Id  and string Format  http   localhost CallCOPAPI api department  0    department Id  with no luck   Does anyone have any ideas why I m getting the 405 error   UPDATE  As per request  here s my Department controller code  I will post both the Department controller code for my front end project  as well as the Department ApiController code for the WebAPI    Front End Department Controller  namespace CallCOP Controllers       public class DepartmentController   Controller               HttpClient client   new HttpClient            HttpResponseMessage response   new HttpResponseMessage            Uri contactUri   null           public DepartmentController                            set base address of WebAPI depending on your current environment             client BaseAddress   new Uri ConfigurationManager AppSettings string Format  APIEnvBaseAddress- 0    CallCOP Helpers ConfigHelper COPApplEnv                     Add an Accept header for JSON format              client DefaultRequestHeaders Accept Add                  new MediaTypeWithQualityHeaderValue  application json                           need to only get departments that correspond to a Contact ID             GET   Department  regionId  0          public ActionResult Index int regionId                        response   client GetAsync string Format  api department GetDeptsByRegionId  0    regionId   Result              if  response IsSuccessStatusCode                                var departments   response Content ReadAsAsync lt IEnumerable lt Department gt  gt    Result                  return View departments                             else                               LoggerHelper GetLogger   InsertError new Exception string Format                       Cannot retrieve the list of department records due to HTTP Response Status Code not being successful   0    response StatusCode                     return RedirectToAction  Index                                                    GET   Department Create          public ActionResult Create int regionId                        return View                                     POST   Department Create          HttpPost           ValidateAntiForgeryToken          public ActionResult Create int regionId  Department department                        department RegionId   regionId              response   client PostAsJsonAsync  api department   department  Result              if  response IsSuccessStatusCode                                return RedirectToAction  Edit    Region   new   id   regionId                               else                               LoggerHelper GetLogger   InsertError new Exception string Format                       Cannot create a new department due to HTTP Response Status Code not being successful   0    response StatusCode                     return RedirectToAction  Edit    Region   new   id   regionId                                                    GET   Department Edit 5          public ActionResult Edit int id   0                        response   client GetAsync string Format  api department  0    id   Result              Department department   response Content ReadAsAsync lt Department gt    Result              if  department    null                                return HttpNotFound                              return View department                                    POST   Department Edit 5           HttpPost           ValidateAntiForgeryToken          public ActionResult Edit int regionId  Department department                        response   client GetAsync string Format  api department  0    department Id   Result              contactUri   response RequestMessage RequestUri              response   client PutAsJsonAsync string Format contactUri PathAndQuery   department  Result              if  response IsSuccessStatusCode                                return RedirectToAction  Index   new   regionId   regionId                               else                               LoggerHelper GetLogger   InsertError new Exception string Format                       Cannot edit the department record due to HTTP Response Status Code not being successful   0    response StatusCode                     return RedirectToAction  Index   new   regionId   regionId                                                    GET   Department Delete 5          public ActionResult Delete int id   0                        response   client GetAsync string Format  api department  0    id   Result              Department department   response Content ReadAsAsync lt Department gt    Result               if  department    null                                return HttpNotFound                              return View department                                    POST   Department Delete 5           HttpPost  ActionName  Delete             ValidateAntiForgeryToken          public ActionResult DeleteConfirmed int regionId  int id                        response   client GetAsync string Format  api department  0    id   Result              contactUri   response RequestMessage RequestUri              response   client DeleteAsync contactUri  Result              return RedirectToAction  Index   new   regionId   regionId                         Web API Department ApiController  namespace CallCOPAPI Controllers       public class DepartmentController   ApiController               private CallCOPEntities db   new CallCOPEntities HelperClasses DBHelper GetConnectionString                 GET api department         public IEnumerable lt Department gt  Get                         return db Departments AsEnumerable                          GET api department 5         public Department Get int id                        Department dept   db Departments Find id               if  dept    null                                throw new HttpResponseException Request CreateResponse HttpStatusCode NotFound                               return dept                        this should accept a contact id and return departments related to the particular contact record            GET api department 5         public IEnumerable lt Department gt  GetDeptsByRegionId int regionId                        IEnumerable lt Department gt  depts    from i in db Departments                                              where i RegionId    regionId                                               select i               return depts                        POST api department         public HttpResponseMessage Post Department department                        if  ModelState IsValid                                db Departments Add department                   db SaveChanges                     HttpResponseMessage response   Request CreateResponse HttpStatusCode Created  department                   return response                            else                               return Request CreateErrorResponse HttpStatusCode BadRequest  ModelState                                       PUT api department 5         public HttpResponseMessage Put int id  Department department                        if   ModelState IsValid                                return Request CreateErrorResponse HttpStatusCode BadRequest  ModelState                              if  id    department Id                                return Request CreateResponse HttpStatusCode BadRequest                              db Entry department  State   EntityState Modified               try                               db SaveChanges                              catch  DbUpdateConcurrencyException ex                                return Request CreateErrorResponse HttpStatusCode NotFound  ex                              return Request CreateResponse HttpStatusCode OK                         DELETE api department 5         public HttpResponseMessage Delete int id                        Department department   db Departments Find id               if  department    null                                return Request CreateResponse HttpStatusCode NotFound                              db Departments Remove department                try                               db SaveChanges                              catch  DbUpdateConcurrencyException ex                                return Request CreateErrorResponse HttpStatusCode NotFound  ex                              return Request CreateResponse HttpStatusCode OK  department

User · Answer

This simple problem can cause a real headache!

I can see your controller EDIT (PUT) method expects 2 parameters: a) an int id, and b) a department object.

It is the default code when you generate this from VS > add controller with read/write options. However, you have to remember to consume this service using the two parameters, otherwise you will get the error 405.

In my case, I did not need the id parameter for PUT, so I just dropped it from the header... after a few hours of not noticing it there! If you keep it there, then the name must also be retained as id, unless you go on to make necessary changes to your configurations.

User · Answer

In my case the error 405 was invoked by static handler due to route   api images   conflicting with the folder of the same name     images

User · Answer

Your client application and server application must be under same domain  for example    client - localhost   server - localhost   and not    client - localhost 21234  server - localhost

User · Answer

I m running an ASP NET MVC 5 application on IIS 8 5  I tried all the variations posted here  and this is what my web config looks like    lt system webServer gt       lt modules runAllManagedModulesForAllRequests  true  gt           lt remove name  WebDAVModule   gt   lt  -- add this -- gt       lt  modules gt         lt handlers gt               lt remove name  ExtensionlessUrlHandler-ISAPI-4 0 32bit    gt         lt remove name  ExtensionlessUrlHandler-ISAPI-4 0 64bit    gt         lt remove name  ExtensionlessUrlHandler-Integrated-4 0    gt         lt remove name  WebDAV    gt         lt add name  ExtensionlessUrlHandler-ISAPI-4 0 32bit  path      verb  GET HEAD POST DEBUG PUT DELETE PATCH OPTIONS  modules  IsapiModule  scriptProcessor   windir  Microsoft NET Framework v4 0 30319 aspnet isapi dll  preCondition  classicMode runtimeVersionv4 0 bitness32  responseBufferLimit  0    gt         lt add name  ExtensionlessUrlHandler-ISAPI-4 0 64bit  path      verb  GET HEAD POST DEBUG PUT DELETE PATCH OPTIONS  modules  IsapiModule  scriptProcessor   windir  Microsoft NET Framework64 v4 0 30319 aspnet isapi dll  preCondition  classicMode runtimeVersionv4 0 bitness64  responseBufferLimit  0    gt         lt add name  ExtensionlessUrlHandler-Integrated-4 0  path      verb  GET HEAD POST DEBUG PUT DELETE PATCH OPTIONS  type  System Web Handlers TransferRequestHandler  preCondition  integratedMode runtimeVersionv4 0    gt       lt  handlers gt    lt  system webServer gt    I couldn t uninstall WebDav from my Server because I didn t have admin privileges  Also  sometimes I was getting the method not allowed on  css and  js files  In the end  with the configuration above set up everything started working again

User · Answer

Decorating one of the action params with  FromBody  solved the issue for me   public async Task lt IHttpActionResult gt  SetAmountOnEntry string id   FromBody int amount    However ASP NET would infer it correctly if complex object was used in the method parameter   public async Task lt IHttpActionResult gt  UpdateEntry string id  MyEntry entry

User · Answer

Add this to your web config  You need to tell IIS what PUT PATCH DELETE and OPTIONS means  And which IHttpHandler to invoke    lt configuation gt       lt system webServer gt       lt handlers gt       lt remove name  ExtensionlessUrlHandler-ISAPI-4 0 32bit    gt       lt remove name  ExtensionlessUrlHandler-ISAPI-4 0 64bit    gt       lt remove name  ExtensionlessUrlHandler-Integrated-4 0    gt       lt add name  ExtensionlessUrlHandler-ISAPI-4 0 32bit  path      verb  GET HEAD POST DEBUG PUT DELETE PATCH OPTIONS  modules  IsapiModule  scriptProcessor   windir  Microsoft NET Framework v4 0 30319 aspnet isapi dll  preCondition  classicMode runtimeVersionv4 0 bitness32  responseBufferLimit  0    gt       lt add name  ExtensionlessUrlHandler-ISAPI-4 0 64bit  path      verb  GET HEAD POST DEBUG PUT DELETE PATCH OPTIONS  modules  IsapiModule  scriptProcessor   windir  Microsoft NET Framework64 v4 0 30319 aspnet isapi dll  preCondition  classicMode runtimeVersionv4 0 bitness64  responseBufferLimit  0    gt       lt add name  ExtensionlessUrlHandler-Integrated-4 0  path      verb  GET HEAD POST DEBUG PUT DELETE PATCH OPTIONS  type  System Web Handlers TransferRequestHandler  preCondition  integratedMode runtimeVersionv4 0    gt       lt  handlers gt       lt  system webServer gt   lt  configuration gt    Also check you don t have WebDAV enabled

User · Answer

You can remove webdav module manually from GUI for the particular in IIS   1  Goto the IIs  2  Goto the respective site  3  Open  Handler Mappings  4  Scroll downn and select WebDav module  Right click on it and delete it   Note  this will also update your web config of the web app

User · Answer

So  I checked Windows Features to make sure I didn t have this thing called WebDAV installed  and it said I didn t   Anyways  I went ahead and placed the following in my web config  both front end and WebAPI  just to be sure   and it works now   I placed this inside  lt system webServer gt     lt modules runAllManagedModulesForAllRequests  true  gt       lt remove name  WebDAVModule   gt   lt  -- add this -- gt   lt  modules gt    Additionally  it is often required to add the following to web config in the handlers  Thanks to Babak   lt handlers gt       lt remove name  WebDAV    gt           lt  handlers gt

User · Answer

Another cause of this could be if you don t use the default variable name for the  id  which is actually  id

User · Answer

WebDav-SchmebDav     make sure you create the url with the ID correctly  Don t send it like http   www fluff com api Fluff id MyID  send it like http   www fluff com api Fluff MyID   Eg   PUT http   www fluff com api Fluff 123 HTTP 1 1 Host  www fluff com Content-Length  11    Data   1     This was busting my balls for a small eternity  total embarrassment

[c#] Web API Put Request generates an Http 405 Method Not Allowed error

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