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Server 2012 R2 - Internet Explorer Proxy Server Issue

    Question

  • 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?

    Friday, January 23, 2015 2:00 PM

Answers

  • Hi Dicki,

    First, please try to reset the Internet Explorer. Some plug-ins may affect the proxy.

    If it doesn't work, please try to perform a network capture on the client.

    Please check if the client send the http traffic to the proxy server at the correct port.

    If the client has sent the http traffic to the proxy server, please check if there is any warning or error in the proxy server.

    To download Network Monitor, please refer to the link below:

    http://www.microsoft.com/en-us/download/details.aspx?id=4865

    Best Regards.


    Steven Lee Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Monday, January 26, 2015 2:29 PM

All replies

  • Hi Dicki,

    First, please try to reset the Internet Explorer. Some plug-ins may affect the proxy.

    If it doesn't work, please try to perform a network capture on the client.

    Please check if the client send the http traffic to the proxy server at the correct port.

    If the client has sent the http traffic to the proxy server, please check if there is any warning or error in the proxy server.

    To download Network Monitor, please refer to the link below:

    http://www.microsoft.com/en-us/download/details.aspx?id=4865

    Best Regards.


    Steven Lee Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Monday, January 26, 2015 2:29 PM
  • I'm getting the same error.  I haven't tried the runas admin method, but I'll give it a go.  I receive the error when I'm off-site.  My proxy is pointed to an internal company proxy PAC file.  So when I go off-site IE for some reason won't realize I'm not on the corporate network and still try to hit that proxy PAC file.

    Ideas?

    Thursday, November 5, 2015 2:28 PM