@@ -37,11 +37,13 @@ The company running npm has a list of common troubleshooting situations [here](h
3737
3838### Firewalls
3939
40−Some companies have a firewall and want to route traffic through a proxy server.
40+Some companies have a firewall.
4141
42−Usually that means you have a `HTTPS_PROXY` environment variable set on your computer.
42+These companies usually have set the `HTTP_PROXY` or `HTTPS_PROXY` environment variable on your computer. This is more common with Windows computers.
4343
44−If you want to try to set it temporarily to see what happens, you can try something like this:
44+The result is that the request for `https://github.com/elm/compiler/releases/download/0.19.1/binary-for-windows-64-bit.gz` is being sent to a "proxy server" where they monitor traffic. Maybe they rule out certain domains, maybe they check data when it comes back from the actual URL, etc.
45+
46+It is probably best to ask someone about the situation on this, but you can test things out by temporarily using an alternate `HTTPS_PROXY` value with something like this:
4547
4648```
4749# Mac and Linux
@@ -52,6 +54,8 @@ set HTTPS_PROXY=http://proxy.example.com
5254npm install -g elm
5355```
5456
57+Check out [this document](https://www.npmjs.com/package/request#controlling-proxy-behaviour-using-environment-variables) for more information on how environment variables like `NO_PROXY`, `HTTP_PROXY`, and `HTTPS_PROXY` are handled by the npm.
58+
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