How Do I Enable HTTP PUT and DELETE Support in My ASP.NET MVC Application on IIS?

Troubleshooting HTTP PUT and DELETE Support in ASP.NET MVC on IIS

When deploying an ASP.NET MVC application that utilizes HTTP PUT and DELETE methods, it's essential to configure IIS appropriately to support these requests. This can become necessary when moving from local development to a shared hosting environment using IIS 7.5.

IIS Configuration

1. Navigate to Handler Mappings in IIS Manager.
2. Locate ExtensionlessUrlHandler-Integrated-4.0 and double-click it.
3. Click the Request Restrictions... button.
4. In the Verbs tab, add both DELETE and PUT methods.

Additional Considerations

• WebDAV Publisher Issue: If running on a Windows 2008 server, you may encounter an issue with the WebDAV Publisher role. To resolve this, consider removing or disabling this role from the site configuration by modifying the Web.config file as follows:

<system.webServer>
  <modules>
    <remove name="WebDAVModule" />
  </modules>
  <handlers>
    <remove name="WebDAV" />
  </handlers>
</system.webServer>

By implementing these steps, you can enable HTTP PUT and DELETE support for your ASP.NET MVC application in IIS, ensuring the correct execution of these request methods in a shared hosting environment.

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