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

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 <system.webServer>.

<modules runAllManagedModulesForAllRequests="true">    <remove name="WebDAVModule"/> <!-- add this --></modules>

Additionally, it is often required to add the following to web.config in the handlers. Thanks to Babak

<handlers>    <remove name="WebDAV" />    ...</handlers>

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/1.1Host: www.fluff.comContent-Length: 11{"Data":"1"}

This was busting my balls for a small eternity, total embarrassment.

Add this to your web.config. You need to tell IIS what PUT PATCH DELETE and OPTIONS means. And which IHttpHandler to invoke.

<configuation>    <system.webServer>    <handlers>    <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />    <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />    <remove name="ExtensionlessUrlHandler-Integrated-4.0" />    <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" />    <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" />    <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" />    </handlers>    </system.webServer></configuration>

Also check you don't have WebDAV enabled.