Microsoft Support Team's IIS Blog : The Official Microsoft IIS Site

Configuring FTP 7.5 with Host Header and SSL

Nov 05, 2009

FTP 7.5 comes with new features like supporting Host headers (Virtual host) and SSL. For compatibility purposes, FTP clients can check whether the FTP server supports host headers by sending a FEAT command to check for supported features. An FTP server...

3 comments

Configuring DebugDiag to Automatically Capture a Full User Dump on a Managed Function

Oct 01, 2009

I recently worked an issue with a customer where we needed to capture a full user dump of the IIS worker process when a specific function was being called. The problem was that the function was in managed code. I thought it would be good to share how...

3 comments

A Tale of Two Developers and Visual Studio Sites and Apps

Sep 30, 2009

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...

3 comments Tags: ASP.NET IIS Visual Studio

ASP.NET MVC: What is it and should I use it?

Sep 01, 2009

In March of this year, we released ASP.NET MVC. Since then, many ASP.NET developers have been perplexed about MVC. Many developers aren't quite sure what MVC is and what it means for ASP.NET developers. Many more developers have some level of understanding...

7 comments Tags: ASP.NET

High memory in IIS due to scriptproxy.dll

Aug 18, 2009

One of my customers had a problem on his IIS server, where the IIS process hosting his web application was suffering from very high memory utilization over time. Eventually the process got so high in memory that the web application became completely unresponsive...

5 comments Tags: High Memory Tools capture dump

Deadlock when storing Asp.net sessions in SQL server during peak load

Aug 12, 2009

When there is more than 1 server in web farm scenario it is an obvious choice to go for session out-of-proc either with SQL server or State server. While storing session with SQLServer if you see issues with SQL deadlock during peak loads involving DeleteExpiredSessions...

4 comments Tags: ASPStateTempSessions deadlock DeleteExpiredSessions

Using ProcDump.exe to monitor w3wp.exe for CPU spikes

Aug 07, 2009

Procdump is a light weight Sysinternal's command-line utility whose primary purpose is monitoring an application for CPU spikes and generating crash dumps during such spikes which an administrator or developer can use to determine the cause or to share...

3 comments Tags: CPU spike Hgh cpu procdump capture dump

IIS7 (and above) – Using FREB to capture dumps for a long running request

Aug 04, 2009

In my previous post , I wrote about using FREB to troubleshoot a simple error message to identify the module which sets the error. For this post, let’s assume we are troubleshooting a slow running page (any page, be it aspx, asmx, html, etc). Not always...

4 comments

Uploading a file using FileUpload control fails in IE8

Jul 27, 2009

I had another interesting customer issue this week, where in uploading a file using the FileUpload control was failing only with IE8 . As you would do with any client-side issue, I started by collecting Fiddler traces for both the working (IE7) and non...

4 comments Tags: FileUpload IE 8 fails upload

In-Proc Session State Management

Jul 21, 2009

What is ASP.NET Session? A session is defined as the period of time a unique user interacts with a particular web application. HTTP is a stateless protocol, in the sense that a Web server is concerned only with the current HTTP request for any given Web...

5 comments

Getting the Sys.WebForms.PageRequestManagerParserErrorException while making an AJAX callback

Jul 21, 2009

Recently I encountered an issue wherein our customer was running into a client side AJAX exception, Sys.WebForms.PageRequestManagerParserErrorException , while trying to make an Async Postback from an ASPX page. This exception was happening for all the...

5 comments

“Parser Error Message: This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.” when .net page has debug=”true”

Jul 20, 2009

Recently, I came across an issue where the customer faced an FIPS (Federal Information Processing Standards) related error on the .aspx pages which had debug=”true”. His ASP.net application was hosted on IIS7 running on Windows Server 2008 SP2. And, he...

6 comments Tags: IIS7 ASP.NET IIS6 FIPS .NET

Troubleshooting HTTP 401.3 errors with Process Monitor

Jun 25, 2009

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...

9 comments Tags: IIS HTTP IIS6 security Tools Access Denied Authentication

How to Add a Locked Header Row to an ASP.NET GridView Control

Jun 23, 2009

The GridView control is often used to display tabular data, much like an Excel spreadsheet. However, unlike Excel, the GridView control doesn't have any automatic way of locking the header row so that it doesn't scroll out of view. Check out this example...

1 comments Tags: ASP.NET Code

Getting access denied error when querying for user Roles using Authorization Role Manager

Jun 18, 2009

Recently I was working on an AuthorizationRoleProvider issue for an ASP.Net application. Customer was using Authorization Role Manager for the Role management of the Active Directory users. Scenario ======= You developed an Asp.net application using Authorization...

5 comments Tags: Azman Access Denied Authorization Role Provider Azrole

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