Epic Games and Unreal Engine with Proxy Authentication

I am trying to get the epic games launcher to work behind a proxy that requires user authentication. I’ve found this post that say how to set the proxy either in the launcher settings or by appending the shortcut target.

Does the Epic Games Launcher support NTLM Authentication or is there another way to provide user credentials to authenticate with the our proxy?

Additionally I’ve spoken with our NOC and they said the proxy team can can add all of the URLs to the whitelist (at the bottom of this page) and bypass the proxy, but that would only be temporary. Ultimately all traffic needs to go through the proxy, as per our corporate policy.