Failed to load organize - no pkgs/themes load from Install

I am using the Packages/Themes from the web site and if I try to install anything I get “Failed to load <pkg|theme>” error on anything I try. I am at work and have a proxy I go through which might be blocking and I also see this. When I click on the search page “+install packages” I see this error:
self signed certificate in certificate chain

We have internal certificates. Is there a way to forego the strict cert check?

This topic came up before in the past, please refer to past answers rather than asking the same question again. Thank you!