> 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/proxy-authentication-required-error.md).

# Proxy authentication required error

Fix the 407 Proxy Authentication Required error in Remote Desktop Manager by configuring proxy settings or adding a devolutions.net exception.

When opening Remote Desktop Manager, you receive the following error message:

`The remote server returned an error. (407) Proxy Authentication Required`

### Solution 1

To configure your proxy, go to ***File*** – ***Settings*** – ***Application*** – ***Proxy*** – ***Proxy settings***, then choose whether Remote Desktop Manager should use the system proxy or a manually configured proxy.

### Solution 2

Add ***devolutions.net*** in your proxy's exception list.


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