IEInternals

A look at Internet Explorer from the inside out. @EricLaw left Microsoft in 2012, but was named an IE MVP in '13 & an IE userAgent (http://useragents.ie) in '14

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  • Blog Post: Understanding Web Proxy Configuration

    Over the last decade, I’ve come to learn a lot about web proxies, having chosen to implement my web debugger as a proxy. In today’s post, I’ll provide an overview of proxy-related information, including information on changes in Internet Explorer 11 / Windows 8.1. The “System...
  • Blog Post: Braindump: DNS

    Note: The “brain dump” series is akin to what the support.microsoft.com team calls “Fast Publish” articles—namely, things that are published quickly, without the usual level of polish, triple-checking, etc. I expect that these posts will contain errors, but I also expect...
  • Blog Post: Proxy-Authentication breaks many applications

    When I first joined Office, I worked on the team responsible for delivering Help, Templates, and ClipArt into the client applications. As we were testing our work in various simulated customer environments, we found a big problem. At least one big customer (tens of thousands of licenses) had a network...
  • Blog Post: The Web Browser Control and the Silent Flag

    Applications that host the Web Browser Control have the opportunity to set the Silent flag to suppress all dialogs that the web browser control may generate. In some cases, this is useful, because it can help ensure a “quiet” user experience without unexpected popups. Current versions...
  • Blog Post: SOCKS Proxies in Internet Explorer

    We recently had a report over on the IEBlog that SOCKS proxies are not supported by IE9 Beta. That observation is correct, and a regression from prior versions of Internet Explorer; IE9 Beta simply ignores the SOCKS proxy if one is specified in the Internet Control panel. Update: This regression,...
  • Blog Post: Understanding Conditional Requests and Refresh

    Today's post is a collection of technical tidbits about conditional HTTP requests and the behavior of IE's Refresh button. It's probably of limited interest to most readers, but if you need to deeply understand either of these topics, hopefully you will find it helpful! Conditional Requests Web...
  • Blog Post: Notes on Proxy AutoConfiguration Scripts

    I had someone ask me for help writing a Proxy AutoConfiguration script today. PAC files are basically simple JavaScript files that expose one function, FindProxyForURL(url, host) . The function returns a string containing a list of one or more proxies which should be used when sending requests to the...
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