https://bugs.winehq.org/show_bug.cgi?id=45255
--- Comment #4 from Hans Leidekker hans@meelstraat.net --- Note that there's support for configuring IE proxy settings in Wine now (wine control -> Internet Settings -> Connections). These settings are used automatically for apps built against wininet. Apps built against winhttp have to implement this themselves by calling WinHttpGetIEProxyConfigForCurrentUser.