Proxy help Failed to connect to "ourproxyname" port 1080: Connection refused

I'm a Desktop Support technician, I have a user that can't scrape a URL.
I figured out how to create a Renviron.site and put in our proxy URL, and my credentials for the proxy.
I can load the RCurl library and then use getURL to get data from websites.
On the users PC and mine, we create the same file, and use his proxy credentials and he gets the error:
Failed to connect to "ourproxy" port 1080: Connection refused
I tried my credentials on his machine and got the same thing. Yet on mine it works fine.

Any ideas?