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"This page cannot be displayed" error when you use proxy exceptions in Internet Explorer 11

Symptoms

In an installation of Internet Explorer 11 that has proxy addresses configured, you receive the following error message when you try to reach a website:

This page cannot be displayed

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Cause

This issue occurs because the page request is erroneously sent to a proxy. This is a known issue and a regression from previous versions of Internet Explorer.

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Resolution

To resolve this problem, reset the order of domains in the browser's proxy exceptions list (also known as a proxy bypass list). Check for domains whose names overlap, and then reorder them to list inner domains first.

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More Information

To reproduce this problem, follow these steps in the Fiddler web debugging tool:

  1. Start Fiddler in capture mode.
  2. In Internet Explorer, click Internet options on the Tools menu.
  3. On the Connections tab, click LAN settings.
  4. In the Proxy server area, select the Use a proxy server for your LAN check box, and then select the Bypass proxy server for local addresses check box.
  5. Click Advanced.
  6. In the Exceptions area, enter the following in the Do not use proxy server for addresses beginning with text box:

    *.mydomain.com.awin;*.mydomain
  7. Browse to http://www.test.mydomain by using Internet Explorer 11.

    Result: You should see that the request is being processed through the Fiddler proxy. You should see a 502 status reported.

  8. In the exceptions list, change "*.mydomain.com.awin ;*.mydomain" to the following:

    *.mydomain;*.mydomain.com.awin
  9. Browse to http://www.test.mydomain in Internet Explorer 11.

    Result: You should see no request in Fiddler, and you receive a "This page cannot be displayed" error message in the browser.

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Keywords: kb

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Article Info
Article ID : 3119660
Revision : 1
Created on : 1/7/2017
Published on : 3/18/2016
Exists online : False
Views : 95