Why are agents are receiving an error, 'Unable to communicate with server'?

Environment:

Oracle B2C Service, All versions

Issue:

Agents are receiving the following error:

"Unable to communicate with server" error
with the following details: "The remote server returned an error: (407) Proxy Authentication Required"

Resolution:

Oracle B2C Service does not require proxy authentication to access the Oracle B2C Service console. If you receive this message, it indicates that a local proxy server within your network will not process the HTTP/HTTPS request in question because the request has not been authenticated.

In order to ensure that all traffic can reach our servers in an unrestricted manner, we require that any proxy servers or web filters used to route Oracle B2C Service traffic be configured with authentication exclusion rules for the following domains. Use of a custom VHOST on your site may require additional entries:

*.custhelp.com
*.rightnowtech.com
*.rightnow.com
*.livelook.com and *.oraclecloud.com (for Cobrowse functionality)

Notes:

For more information on optimizing Oracle B2C Service traffic within your network environment please see the Answer ID 31: Oracle B2C Service Infrastructure Requirements.