This is usually because the HTTP_PROXY evironment variable is not set or unset properly. If you use a proxy to surf, then you have to set an environment like so:
set HTTP_PROXY=https://proxy1.myproxy.com:8080

I forget sometimes when I don't need it and have to explicity turn the environ var off.
set HTTP_PROXY=

You can prove to yourself things are working correctly if you can `get www.perlmonks.com` from the cmd line.

JamesNC