Proxy being applied to hostname pointing to localhost

By design Issue #958838


Oct 16, 2014
This issue is public.
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Steps to reproduce


Repro Steps:

Open Internet Explorer -> go to Internet Settings -> go to Connections tab -> press LAN Settings button -> configure some proxy server.
In <windowsdir>\system32\drivers\etc\hosts add an entry for pointing it to
Finally make a request to and e.g. and witness these requests being forwarded to the configured proxy server.

Expected Results:

Resolve hostname; if resolves to localhost then do not let request leave local machine, otherwise forward to proxy.

Actual Results:

Dev Channel specific:



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    Comments and activity

    • Microsoft Edge Team

      Changed Assigned To to “Tony S.”

      Changed Assigned To to “Venkat K.”

      Changed Assigned To from “Venkat K.” to “Ivan P.”

      Changed Assigned To from “Ivan P.” to “David W.”

      Changed Status to “By design”

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