IIS and ASP.NET Information and Tips from Microsoft Developer Support
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Getting the Sys.WebForms.PageRequestManagerParserErrorException while making an AJAX callback
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 clients in a specific network and looked like this...
21 Jul 2009
“Parser Error Message: This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.” when .net page has debug=”true”
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 was able to reproduce the issue using a very simple...
20 Jul 2009
HttpException Due to Invalid Viewstate After Installing .NET Framework 3.5 SP1
In the recent past I have come across several issues where our customers have started running into ViewState issues after installing SP1 for .NET Framework 3.5. The exception details are similar to the following: Server Error in '/ActionTest' Application. Validation of viewstate MAC failed. If...
13 May 2009
<location> Tag Causes Local Automatic ASP.NET debugging not to work in Visual Studio
This week I got an interesting issue altogether. One of my customers was unable to debug ASP.NET 3.5 application locally using Visual Studio 2008. The application was created using Web Application Project. When we started the application using "Start Debugging (F5)", page came up fine but debugger...
2 Feb 2009
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
6 May 2008
Looking at the finalization queue in the debugger
Want to see what objects you have added a finalizer too, follow the information here .
28 Apr 2008
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
25 Apr 2008
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 .
23 Apr 2008
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
15 Apr 2008
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