Microsoft Support Team's IIS Blog
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Intermittently System.Web.HttpExceptions(A field or property with the name ’<columnName> ‘ was not found on the selected data source) is thrown when the application is under heavy load
Working on another interesting case where we were occasionally failing with HttpException and after hitting refresh on the browser we were back in business.Next stop was to look at event viewer where bunch of unhandled exceptions like below were reported: -
Fix: UpdatePanel Async Postbacks Slow in Internet Explorer
We've seen a few issues recently where customers were experiencing very slow async postbacks via an UpdatePanel, but only in Internet Explorer. Other browsers worked fine. (When I say "very slow," I mean in the neighborhood of 30 seconds!) The cause for this isn't a mystery to us.
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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 monitor can be obtained here.
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Troubleshooting a simple error message using FREB
FREB (Failed Requests Tracing – formerly known as Failed Request Event Buffering) is one of the nicest features released with IIS7 which would come in handy during troubleshooting. It does request based tracing, and produces a log file (in .xml format) that shows events and notifications from the various modules that worked on the request during its lifecycle.
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Why System.Net.WebException comes up post .NET Framework 3.5 SP1?
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Troubleshooting System.OutOfMemoryExceptions in ASP.NET
When the .NET Framework was first released, many developers believed the introduction of the garbage collector meant never having to worry about memory management ever again. In fact, while the garbage collector is efficient in managing memory in a managed application, it's still possible for an application's design to cause memory problems.
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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.
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ASP.NET April 2009 Hotfix Rollup Available
Late last month we released a hotfix rollup that includes several fixes. We released these fixes in a rollup because we felt that many customers would be impacted by these issues and we wanted the fixes available to you easily without having to call and open a support incident.
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HttpException Due to Invalid Viewstate After Installing .NET Framework 3.5 SP1
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How To View what ASP.NET Requests are doing at runtime on IIS 6.0
This is just a quick blog to mention a forgotten tool. The managed stack explorer can be run on an IIS 6.0 Server running ASP.NET 2.0 to investigate the managed call stacks. Looking at the call stacks when an ASP.NET application is not responding may help identify what the requests are doing.