AsiaTech: Microsoft APGC Internet Developer Support Team

We focus on various troubleshooting plan and solution on IIS web platform and distributed applications

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  • Blog Post: How Internet Explorer Enhanced Protected Mode (EPM) is enabled under different configurations

    How Internet Explorer Enhanced Protected Mode (EPM) is enabled under different configurations Background EPM was first introduced in Internet Explorer 10, which provides the next level of protection to web users via below approaches: · 64-bit processes · Leverage the new AppContainer...
  • Blog Post: A quick way to check if a web site both in intranet zone and in exception list will bypass proxy server or not.

    Many users are confused on these questions: 1) If the web sites both in intranet zone and in exception list will bypass proxy server or not. 2) If the web sites in intranet zone and not in exception list will bypass proxy server or not. Since we have many articles to discuss this question, it’s...
  • Blog Post: How to add web site to Compatibility View List via GPO

    Usually, we add web site to Compatibility View List from IE windows: Click “Tools -> Compatibility Settings” and input web site address in below windows: It can also be applied from GPO for domain users. Here are several popular methods to achieve this task: Solution...
  • Blog Post: How to apply IEM to IE10

    Article Updated! Please check this new one: http://blogs.msdn.com/b/asiatech/archive/2014/05/12/how-to-apply-the-content-of-ie-settings-in-gpo-which-used-iem-ie-maintenance-before-ie10-to-ie10-version-since-iem-has-been-deprecated-begin-from-ie10.aspx
  • Blog Post: Case Study: Desktop IE works but Modern UI IE fails to connect to the Internet on Windows 8

    Symptoms A customer reported that he failed to connect to the Internet in Modern UI IE on this Windows 8 however he can use the Desktop IE on the same machine. Modern UI IE has already been launched. Two iexplore.exe processes (Frame process and Tab process) appear in Task Manager. We type URL...
  • Blog Post: How to disable Proxy Server settings from IEAK

    When you want to explicit disable Proxy Server on Internet Explorer’s connection setting from IEAK, you may find the setting doesn’t apply: client still keep old exiting setting, i.e. checked. If check from Group Policy Management Editor, User Configuration->Policies->Windows...
  • Blog Post: Changing IE documentation mode using Fiddler

    We got couple of severe IE performance issues recently. After spend lots of time, we suspect these issues are due to poor quirks mode. We want to change the IE documentation mode to verify this. However, for these scenarios, IE hang/dead with 100% CPU, there is no way to change the documentation mode...
  • Blog Post: Failed to apply Proxy Setting through GPO

    We often got customer service requests about Proxy Setting not applying via GPO. Usually customer might deploy LAN setting through GPO IEM. I summarized several symptoms and solutions from my support experience in case you might get similar issue: 1. Check if there is invalid entry in Exception...
  • Blog Post: Lync 2010 always opens chat window hyperlinks in the same IE tab

    I was questioned regarding Lync 2010, why does it always open the chat window hyperlinks in the same IE tab. The IE tabs settings doesn’t seem to take effect. No matter whether you set it to “A new window”, “A new tab in the current window” or “The current tab or window”...
  • Blog Post: IE fails due to some ISPs distort DNS

    Case 1 An Intranet portal website is set as IE’s home page. When users are connected to an external network and launch IE, some ISPs might distort the requests and redirect the Intranet website to their own advertise/search websites. Due to the redirect responses have a 301 Permanent redirect...
  • Blog Post: IE display blank when browsing certain web page

    Actually blank page can be caused by many reasons. I will post more cases about blank web page troubleshooting for your interesting later. Today let me share one I worked on at the end of last year. I think it is a good example about how to use wininet log to figure out kind of issue. Customer...
  • Blog Post: What does “recommended security and compatibility settings” in IE 9 first-run wizard mean?

    By default, each user is prompted to choose 1 of below 2 options at the first run of IE 9. · “Use recommended security and compatibility settings” · “Don’t use recommended settings” If you choose the first option, below 2 registry key values...
  • Blog Post: IE Home page GPO applied with delay

    Recently I worked on an IE home page GPO issue: Symptom ======== My customer configured a GPO for IE home page www.bing.com in IE maintenance policy. This policy does not take place for the domain user until the domain user runs gpupdate /force manually on the client machine or applies...
  • Blog Post: How to Add Trust Sites into IE before IE10 through Group Policy

    Due to IE10 published, I’ll conclude the methods that how to add trust sites in to IE of the version before IE10. General, there are three methods to set trust sites to client machine by GPO from DC configured on windows 2003 or windows 2008. If the client machine is newer than windows...
  • Blog Post: Insight WPAD proxy settings on IE

    Backgrounds The Web Proxy Auto-Discovery Protocol (WPAD) is a method used by clients to locate a URL of a configuration file using DHCP and/or DNS discovery methods. Once detection and download of the configuration file is complete it can be executed to determine the proxy for a specified URL. WPAD...
  • Blog Post: Office documents will be recognized as .zip file when downloading from IE

    Symptom When we try to download some Office documents with OpenXML format(Office 2007 or later), the document will be probably identified as an zip file as below. If you try to save the file, the file extension could also be .zip instead of .docx. This problem only happens on...
  • Blog Post: IE always prompts for authentication when browsing through Proxy server

    Symptom Let’s suppose such a scenario: Ø You have a website which enables NTLM authentication. Ø You also have a Proxy server no matter whether it needs authentication or not. Ø You try to browse the website through proxy server You may be continually prompted...
  • Blog Post: Create certificates via commands for testing purpose

    I used the following commands to generate some certificates for testing purpose without building a certificate server: Create a self-signed root authority ========================== Run the command to create a self-signed root authority certificate and export the private key: makecert -n...
  • Blog Post: How to develop and deploy ActiveX Control using ATL

    Create ATL ActiveX Control 1. In “Visual Studio 2010”, create a new “ ATL Project ” with Visual C++, which named “DemoATLActiveX” in this project. 2. Here comes the “ ATL Project Wizard ” page. Click “ Next ”. 3. Select...
  • Blog Post: IE hang when access some web sites with Proxy.pac

    Recently we worked on several IE hang cases which have similar symptoms, let me share our finding and solution. Symptoms ======== Internet Explorer hangs for minutes before web page can be displayed. It happens on several internet web sites. No issue if IE set proxy server directly...
  • Blog Post: Unable to organize favorites in IE8

    After applying following Group Policy setting, users are unable to organize favorites in Internet Explorer 8. User Configuration->Administrative Templates->Windows Components->Windows Explorer ->Prevent access to drives from My Computer (Restrict C drive only) IE favorites location...
  • Blog Post: Internet Explorer Fails to open PDF file

    Occasionally, Internet Explore fails to open PDF file using Adobe Acrobat Reader and displays a blank screen. In the network monitor trace , it shows that client side receives the PDF file from server and logs Http 200. From process monitor log, it shows the Internet Explorer fails to open...
  • Blog Post: How to develop and deploy ActiveX control in C#

    How to develop and deploy ActiveX control in C# There are lots of documents regarding how to develop and deploy an ActiveX control in native code(VB, C++, Delphi, …), however there’s few documents describe the manual in .NET. With this manual, you will learn how to develop, sign and...
  • Blog Post: IE keeps asking credentials when access an IIS7.5 web site requires Windows Authentication

    This is a Windows 2008 R2 with IIS installed and couple of Sharepoint sites running already. The Sharepoint sites use Windows Authentication, and all these Sharepoint sites working fine. A new web site was deployed to this server and enabled Windows Authentication (using Kernel-mode), however, IE...
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