A Proxy cache which is a feature of the network you are connected to (eg: Your company). Only your network administrator will be able to troubleshoot this issue further.
Proxy caching allows a server to act as an intermediary between a user and a provider of web content. When a user accesses a website, proxies interpret and respond to requests on behalf of the original server.
For much of the modern web, requests sent to a web service are handled by an intermediate server. This intermediate – or proxy – server processes requests to determine how they should be handled. Proxy servers allow enterprises to structure and safeguard their networks while transparently providing additional features to users.
Proxy caching is a feature of proxy servers that stores content on the proxy server itself, allowing web services to share those resources to more users. The proxy server coordinates with the source server to cache documents such as files, images and web pages.
How Proxy Caching Works
Proxies act as a gateway between the user and the source server, storing (or caching) the server’s resources. When the user attempts to access a resource, the proxy checks to see if it has a recent copy of the resource on hand. If so, the resource is immediately delivered to the user. If not, the resource is retrieved from the source and simultaneously cached to the proxy and delivered to the user.