About proxy servers
A proxy server is an intermediate server that typically sits between the user and the main server. It can be used to provide security and to speed download times.
Most home users do not use a proxy server, but many offices, schools, and Internet Service Providers do. If you are having trouble downloading virus pattern files or program updates, it may be because you use a proxy server but it has not been identified or there is an error in the address/credentials.
If there is a proxy server between your computer and the Internet, your Web browser is probably configured to use it. Check the online help of your Web browser to find out if you are connected to the Internet using a proxy server. In many cases, you can check whether you have a proxy server connection by checking the Advanced, or Options settings of your Web browser.
See also: