WebDAV and WebAPI together cause Error: Handler "ExtensionlessUrlHandler-Integrated-4.0" has a bad module "ManagedPipelineHandler" in its module list
We ended up going to Microsoft with this, they reviewed it for several weeks before coming back saying that it's not possible to run WebDAV and WebAPI in the same site.
They will try to address this issue in a future release of IIS.
@jblaske has a good response.
If you want to remove it temporarily then maybe this article is the best solution.
If you want to remove the handler all together then follow these steps.
- Open IIS and go to the site in question.
- Click on "Handler Mappings"
- Find the handler named "WebDAV"
- Select it and Remove it
This is my original post.