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  • Blog Post: IIS Worker Process Performance Monitoring Tips

    (For IIS 6 and above) Scenario 1: Performance Monitor (Perfmon) has been part of Windows for a long time, but if you have many application pools and only one of them experience high CPU or memory usage issue, how to use Perfmon to track its long term usage trend? Follow this article and ask perfmon to...
  • Blog Post: SSL Diagnostics for IIS 7.*

    We still need good tools to help troubleshoot SSL issues on IIS 7 and IIS 7.5. Then we have two choices, Use The Official SSL Diagnostics Tool for IIS 6 1. Turn on IIS 6 Compatibilities features on IIS 7.*. 2. Install SSL Diagnostics 1.1 for IIS 6. 3. Run SSL Diagnostics tool as administrator. Use This...
  • Blog Post: Astonishing Tomcat Connector Status

    There are a lot of questions on IIS.net forums about running Tomcat Connector on IIS. Sounds like in many cases such configuration will fail. I am not a Tomcat user, so it is not easy to check on the details, but just found this horrible notice published on Apache site under Supported Configuration section...
  • Blog Post: Commands Supported by FtpWebRequest and IIS FTP

    Server Side Commands FTP 7.5 accepts the following FTP commands. 214-The following commands are recognized (* ==>'s unimplemented).     ABOR     ACCT     ADAT *     ALLO     APPE     AUTH     CCC...
  • Blog Post: Database for Web Applications

    When you thought the whole world is using multi-core micro-processor, remember that I still have a single-core computer at home. Likewise, we still see legacy web applications who use Access as database. But it is time to upgrade to a real powerful database for web applications, guys. I cannot count...
  • Blog Post: IIS 7 Dot Tricks, Part II

    I would like to have a secure server, so why not block all unknown file extensions? I can easily achieve that by setting allowUnlisted to false in applicationHost.config file on <system.webServer\requestFiltering\fileExtensions> tag. But why I cannot access my site via http://(server_name)/ ! Why...
  • Blog Post: IIS 7 Dot Tricks, Part I

    Well, what if I want to serve files without extensions on IIS 7? A small test will give you a 404 error page, as this MIME type is not set up yet. So, why not go and add one rule? What! How can I add such as rule, if the file has no extension! Calm down. All you need is to use “.” (a single and easy...
  • Blog Post: Make IIS 7 Custom Error Pages Similar to Old Versions

    Well, the goodness of being a support engineer is that you can receive both “Holy Sh*t” and “Thanks a ton” from the same guy. IIS 7 does introduce a new custom error mode, as documented in the following article, How to Use HTTP Detailed Errors in IIS 7.0 You must pay much attention to digest the words...
  • Blog Post: Installing FTP Server on Windows 7 RC 7100

    This posting is provided "AS IS" with no warranties, and confers no rights. It is an interesting question about how to install only FTP server on Win 7 RC. But my research reveals a few interesting points. You can install only FTP server related items in the dialog. OK, if you don’t choose...
  • Blog Post: IIS 7.5 Warm-Up Feature in Windows 7 RC 7100

    This posting is provided "AS IS" with no warranties, and confers no rights. Back in January my colleague Mai-lan blogged about IIS 7 .5 new features. One of them is the long-awaiting warm up feature for some users, as he wrote, Support for application pool warm-up for large applications that...
  • Blog Post: WER for IIS 7 Worker Process Crashes

    How to capture IIS 7 worker process crash dumps without installing anything on the server ? This sounds like a tough question to answer, as Debug Diagnostics which is a very nice tool to use for such cases needs to be installed on the server before any action. What about Debugging Tools for Windows ...
  • Blog Post: The RPC Server Is Unavailable for IISRESET

    You may already that using "iisreset (server name) /restart" can restart IIS services on that remote server. But why such a command can give you this error message? >iisreset myserver /restart The RPC Server is unavailable. I go ahead and turn off Windows Firewall on my server and now everything is...
  • Blog Post: Windows Authentication and IE 7

    Some guys asked how to log out when Windows authentication is used for a web site. A simple answer is to close the browser if you are using Internet Explorer. The explanation is available in this KB article, http://support.microsoft.com/kb/264921 (where you should pay attention to the following paragraph...
  • Blog Post: KB 839357 Update for IIS 7

    This posting is provided "AS IS" with no warranties, and confers no rights. Follow these steps on an Exchange front-end server that communicates with a clustered Exchange back-end server. (Prepare the CustomErrors folder) Create an Active Server Pages (ASP) Web page that contains the following...
  • Blog Post: HTTPS Load Balancing Configuration

    * Certificates on Web Servers * The first way is to create a key and certificate for the NLB domain name and then install it on both IIS servers. http://support.microsoft.com/kb/313299 In this way, the load balancer simply forward HTTPS traffic to web servers. SSL encryption and decryption is done on...
  • Blog Post: Addition to KB942045

    This posting is provided "AS IS" with no warranties, and confers no rights. If you are familiar with IIS 7, you will notice an important feature added named Request Filtering . Then you must know the following KB article, http://support.microsoft.com/kb/942045 However, a latest query from a...
  • Blog Post: IIS Log And Network Monitor Log Mapping Tips

    You may already know that IIS log is a valuable source to navigate to troubleshoot problems, and I guess you also know Network Monitor log is another priceless evidence. However, do you realize combining them is both an interesting and tough challenge? But that can provide you more information about...
  • Blog Post: Addition to KB555071

    This posting is provided "AS IS" with no warranties, and confers no rights. In some cases when you try to create IISADMPWD virtual directory and test, you may come across some problems like "Error: object not found". So here I try to provide you more information about our KB article 555071 . Please open...
  • Blog Post: Update KB894351 for Windows XP SP3

    When you navigate to this KB article you will see it only applies to Windows XP SP2. But always it provides you a hint once you meet this problem with IIS and SP3. Well, there are already people complaining that even if replacing xpsp2 with xpsp3 step 6 in Method 2 cannot work. In that case, you should...
  • Blog Post: Notice on KB892847

    Well, this KB article contains a hotfix for Windows Server 2003 SP1. Although this hotfix is part of SP2, you may notice that registry keys mentioned in this KB does not appear on your system after applying SP2. Therefore, you will have to follow the steps and create them manually. Until then, you get...
  • Blog Post: HTTP 401.1: Delegation Configuration Report

    HTTP 401 is a common error code you may see in an error page. While 401 has a few sub cases, 401.1 is so common that I guess most web developers experience it in the past. Well, this post will not discuss everything about 401.1 but want to provide a hint if you split your application into several layers...
  • Blog Post: IIS 7 Availability Matrix

    Windows Vista and Windows Server 2008 have been released for a long time. However, there are still some people asking whether their Vista or Server 2008 installation contains certain features. Well, Microsoft have the matrix published here for your reference. Please notice the following key points, Windows...
  • Blog Post: BadImageFormatException Reproduced in Visual Studio 2008 on x64 Windows

    This posting is provided "AS IS" with no warranties, and confers no rights. Well, I guess most ASP.NET people know “Platform target” setting in a project. There are four options, Any CPU, x86, x64, and Itanium (aka IA64). When you are debugging a web application inside Visual Studio 2008 on x64 Windows...
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