I am loading the latest version of LMI on a Win 7 host PC and cannot get past the Proxy Settings screen, no matter what I select - "Use Proxy Server" (default 18.104.22.168 address), or unchecking that box. I get an error -2080439550 that is telling me to configure my proxy settings.
The problem ended up being internal. IT made some changes that I wasn't aware of. The proxy info was supposed to be loading automatically, but on one machine it wasn't doing so. All good now.