> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/server/knowledge-base/troubleshooting-articles/http-error-404.6-not-found-the-request-filtering-module-is-configured-to-deny-the-http-verb.md).

# HTTP Error 404.6 - Not Found, The request filtering module is configured to deny the HTTP verb

The browser DevTools displays the following error when information is saved in the Devolutions Server administration panel:

```
HTTP Error 404.6 - Not Found
The request filtering module is configured to deny the HTTP verb.
```

#### Solution

To resolve the issue, enable ***Allow unlisted verbs*** in the ***Request Filtering*** settings in IIS Manager.

1. Open IIS Manager and navigate to your Devolutions Server site.
2. Open ***Request Filtering***.
3. Select the ***HTTP Verbs*** tab.
4. In the ***Actions*** pane, click ***Edit Feature Settings...***
5. Enable ***Allow unlisted verbs*** and click ***OK***.
6. Retry the action in the Devolutions Server administration panel.

Once ***Allow unlisted verbs*** is enabled, IIS should stop blocking the required HTTP verb, and saving information in the administration panel should work normally.


---

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