> 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/rdm/knowledge-base/troubleshooting-articles/http-status-code-unauthorized-error-message.md).

# HTTP Status Code Unauthorized error message

Fix the HTTP Status Code Unauthorized error in Remote Desktop Manager by disabling Basic Authentication on the Devolutions Server website in IIS.

When the ***Basic Authentication option*** is enabled on the Devolutions Server website Authentication feature, Remote Desktop Manager displays the following error message:

```
HttpStatusCode: Unauthorized,
HttpErrorReason: Unauthorized,
Error: Unauthorized,
```

### Solution

1. Open ***IIS Manager***.
2. Expand the tree in the ***left pane***.
3. Select the Devolutions Server website or application.
4. Open the ***Authentication feature***.
5. Disable the ***Basic Authentication***.

If any other sites on that machine do not require the ***Basic Authentication***, you can uninstall it from the ***Server Roles*** in ***Server Manager***.


---

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