docs/data/reusables/actions/enterprise-http-proxy.md

If you have an HTTP Proxy Server configured on {% data variables.location.product_location %}:

• You must add .localhost, 127.0.0.1, and ::1 to the HTTP Proxy Exclusion list (in this order).
• If your external storage location is not routable, then you must also add your external storage URL to the exclusion list.

For more information on changing your proxy settings, see "AUTOTITLE."