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IIS and ASP.NET Information and Tips from Microsoft Developer Support

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  • Blog Post: ASP 500 Error and Error Code 0x800700aa when browsing a simple .asp page

    I recently helped a customer with an issue where ASP pages would not execute and returned the following error page: HTTP Error 500.0 - Internal Server Error If you check the Detailed Error page you will see the following additional information (NOTE: Steps to enable and use Detailed Errors can...
  • Blog Post: A Tale of Two Developers and Visual Studio Sites and Apps

    We've encountered several scenarios in which customers have multiple developers working on a single web application in Visual Studio. In such cases, it's not uncommon for each developer to be working on a portion of the application. There isn't any problem in working with this way, but you may encounter...
  • Blog Post: Troubleshooting HTTP 401.3 errors with Process Monitor

    Last week I posted the following blog which showed how to use Process Monitor to troubleshoot service startup issues. http://blogs.msdn.com/webtopics/archive/2009/06/16/troubleshooting-service-startup-issues-with-process-monitor.aspx To continue on that topic, I ran across another issue recently...
  • Blog Post: Troubleshooting service startup issues with Process Monitor

    Many things can cause a service, like IIS’s World Wide Web Publishing Service, to fail on startup. When troubleshooting such an issue, Process Monitor can be an invaluable tool. What Process Monitor does is monitor all File and Registry access on the system in real-time. The latest version of process...
  • Blog Post: 3 Simple Steps for Configuring an SPN for your Website

    The following article is an excellent reference when trying to figure out how to set SPN’s for your IIS Site. http://support.microsoft.com/kb/929650 I wanted to focus on the SPN helper script in the article, and how it can be used in a very simple way when setting your own SPN’s, to avoid the common...
  • Blog Post: Caution while xcopying IIS 7.0 config files

    Metabase.xml is the central store where IIS 6.0 stores most of its configuration information. Its a plain text file and stores all the information in a simple XML format. The XML format naturally raised a notion of being able to XCOPY the config file to another server and transferring the settings with...
  • Blog Post: SCCM 2007 Charting functionality does not work on 64 bit IIS

    System Center Configuration Manager (SCCM) has a nice functionality of displaying report data as charts.  When deployed on a 64 bit IIS 6.0 machine these chart displays may stop working and you will start getting the following error message. This report has a chart, but the Microsoft Office Web...
  • Blog Post: Global.asa of 0 KB acts funny on Windows 2003 after installing SP2.

    Few days’ back one funny issue came to me.   All of a sudden on one of the Windows 2003 server my customer was getting “HTTP/1.1 500 Server Error” for any .asp pages in the application. It stopped working since last couple days and used to work earlier. So here the obvious question would be - What...
  • Blog Post: Where is ASP.NET 3.5 on IIS ?

    Most people on installing .NET 3.5 on the server "expect" an entry for  v3.5 under the ASP.NET version Tab in IIS manager. And not finding that entry start panicking. If you have been one of those read on. The more tech savvy folks try to run aspnet_regiis -i from the v3.5 framework folder...
  • Blog Post: How to troubleshoot HTTP 400 errors

    After sending an HTTP request to an IIS server, an HTTP client (such as Internet Explorer) may display the following type of error message in the browser window: If Internet Explorer’s Friendly HTTP Error Messages option is turned off, the error may resemble the following: ...
  • Blog Post: Removing an IIS server's IP address from HTTP responses

    Introduction The purpose of this blog post is to discuss how to mask an IIS server’s IP address from being sent as part of an HTTP response. By default, IIS can send a server’s IP address in the Content-Location or Location response headers of a response. Beginning in Windows 2003 SP1, you can configure...
  • Blog Post: Configuring IIS to work around webpage display issues in Internet Explorer 8.0

    Special thanks to Sean Everhart for contributing this topic Internet Explorer 8.0 introduces a new method of interpreting and displaying the HTML data sent from web servers. In some cases, this can result in the web pages being displayed to users incorrectly. For example the pages may display with...
  • Blog Post: A lightweight IIS 6.0 Web Manager - Manage your Web Sites, Application Pools from any where on the Web.

    A Web administrator has to have access to the IIS server in order to ensure that any diagnostic/preventive measures can be performed at any point of time. One has to ensure all the web sites are running up and fine during the course of a day. Activities like recycling Application pools, starting/stopping...
  • Blog Post: Limiting Passive FTP Port Range on IIS 7.0 / IIS 6.0 / IIS 5.0

    Passive FTP uses a range of ports to transfer data. This can be a problem because the port range that IIS uses has to be opened up at the Firewall. Many administrators would like to limit the port range between specific values so that they can have a better control on the ports that need to be opened...
  • Blog Post: Weeking recap of ASP.NET Debugging blog

    Here are last weeks updates to the ASP.NET Debugging blog: Code Gallery and CodePlex, how are they different and what are their benefits? An Open Debugger Extension Job openings with the .NET Framework Team ASP.NET Tips- What to gather to troubleshoot – part 1 – High CPU
  • Blog Post: Looking at the finalization queue in the debugger

    Want to see what objects you have added a finalizer too, follow the information here .
  • Blog Post: Understanding when to use a Finalizer in your .NET class

    If you are going to use a finalizer in your .NET class, be sure to read this post so that you understand when you should and shouldn’t use it: Understanding when to use a Finalizer in your .NET class
  • Blog Post: Troubleshooting Anonymous authentication failures in IIS

    We often get support calls on issues related to Anonymous authentication failures and this is something which we feel an Admin can fix without requiring our support. Our aim in this post is to ensure people have a good troubleshooting strategy for anonymous authentication failures. You can follow...
  • Blog Post: ASP.NET Tips: How to use DebugDiag to track down where a performance problem is coming from

    Narrowing down a problem is sometimes the hardest part of troubleshooting.  Learn how DebugDiag can help save the day in this post: ASP.NET Tips- How to use DebugDiag to track down where a performance problem is coming from
  • Blog Post: Visual Studio Designer not Respecting Assembly Binding

    Another issue we discovered is around this.  This is a rather specific situation, check out the posting to get more information on the issue: Visual Studio Designer not Respecting Assembly Binding Redirection
  • Blog Post: Making an Asynchronous Call using the Impersonation Identity

    Have you ever wanted to make an asynchronous call but use the credentials of the user that is browsing your site?  Or connect to a database using a specific user account?  Check out how to do both of these here .
  • Blog Post: Change in IIS MMC setting may cause unwanted restarts of W3SVC

    Recently we have discovered an issue with IIS Manager wherein changing settings in a certain way may cause unexpected restart of World wide Web Publishing Service. And this may happen before you realize until you go back to the Application event log and find entries corresponding to the W3SVC restart...
  • Blog Post: Identifying a COM call that is blocking the GC and causing a memory leak

    A new blog posting about this can be found here: ASP.NET Tips- How to identify a COM call that is blocking GC, causing a memory leak
  • Blog Post: ASP.NET Tab Missing

    A common issue we see customers having is after installing ASP.NET 2.0, the ASP.NET Tab is missing from IIS. This tab is used for setting the version of ASP.NET and a lot of other things. When this tab is missing, it can be rather difficult to get it to appear. So we now have a way to fix this...
  • Blog Post: Have a question? Submit it and get an answer

    You can submit any question you have around .NET, IIS, or ASP.NET to me at my blog and I’ll answer the question or create a blog posting about it. Feel free to ask anything you’d like. Got a question- Get an answer here
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