We run a web proxy server on our network for internet access.
On client machines (running Windows 2012 R2) I have configured the proxy server setting in Internet Explorer "Tools\Internet Settings\Connections\LAN Settings" to point at the designated web proxy server.
When attempting to browse websites from IE I receive the "The proxy server isn't responding" error.
Conversely, browsing the same sites via Google Chrome and Firefox (installed on the same client server) return web pages without error.
In addition, if I run Internet Explorer as administrator (Right Click\Run as Administrator), I am able to browse web sites without receiving the error.
It would appear that the issue is isolated to browsing via IE when not run in elevated mode.
Has anyone come across this issue?
