"Problem log" C # calls Webapi's Put&delete method to report a 405 error

problem Environment : Windows Server 2008R2 IIS7.5

Problem Description : Site Call backend Data interface, get and post method normal, put and delete method report

　　　　　405 Method not allowed, No ' Access-control-allow-origin ' header is present on the requested resource.

Of course, the cross-domain processing has been done, local is no problem.

Workaround :

Stick to Google's most adopted solution:

• under   of the Web. config configuration file, <system.webserver>  node, add the following configuration:  
  

  <modules runallmanagedmodulesforallrequests= "true" > <remove name= "webdavmodule"/> </modules> 

• in <HANDLERS>


  < /pre>
   <remove name= "WebDAV"/> 
   

But I tried it all, and there was no effect, and then in the Control Panel program and features, turn Windows features on or off to remove WebDAV, restart IIS, and work properly.

"Problem log" C # calls Webapi's Put&delete method to report a 405 error