ASP.NET Debugging

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System.IndexOutOfRangeException on a webfarm: Here is another issue that a customer had that I thought would be helpful to others. Problem The customer said they are getting Exception type: System.IndexOutOfRangeException every minute or so when accessing their web site. The error looks like: Read More...
Posted 13 August 08 06:00 by Tom | 1 Comments
Filed under ASP.NET, IIS, .NET, Exceptions
Update for viewstate issues: So a while ago I posted about how to fix the Validation of viewstate MAC failed error . There is some really exciting news that is coming with Visual Studio 2008 Service Pack 1 and .NET Framework 3.5 Service Pack 1. One of the improvements Read More...
Posted 12 August 08 03:00 by Tom | 7 Comments
Filed under ASP.NET, IIS, .NET, Microsoft, Exceptions
ASP.NET Tips: DumpAllExceptions output changes: The first time you run !DumpAllExceptions you will see it print out one full exception for each type of exception that is in the dump. This will include the message and the callstack of the exception. For example: Any time after that, if you run the same Read More...
Posted 23 July 08 06:00 by Tom | 1 Comments
Filed under ASP.NET, Debugging, IIS, .NET, Exceptions
Unable to use Session State Server: Issue ASP.NET site running under .NET 2.0 has the following setting in web.config: <sessionState mode="StateServer" stateNetworkTimeout="10" cookieless="false" timeout="30"/> When the application attempts Read More...
Posted 14 July 08 06:00 by Tom | 1 Comments
Filed under ASP.NET, Debugging, .NET, Exceptions
ASP.NET Tips: What to gather to troubleshoot - part 5 - OutOfMemoryException: So we already talked about what to gather when you are experiencing high memory . But what if you are actually getting a System.OutOfMemoryException? Here is how you capture a dump at the time you are running out of memory. The following steps Read More...
Posted 19 May 08 10:49 by Tom | 4 Comments
Filed under ASP.NET, Debugging, IIS, .NET, High Memory, Exceptions, ASP.NET Tip
Validation of viewstate MAC failed error: Issue Description You can get this Exception: HttpException (0x80004005): Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. Read More...
Posted 14 March 08 12:48 by Tom | 41 Comments
Filed under ASP.NET, Debugging, Exceptions
HOWTO: Capture a dump on a specific managed exception: So often times, we get an exception of interest, either we see it in the Event Log or we see it in a dump and we want to get a dump at the time of the exception to see what was happening. So how do we go about doing that? Well, the answer Read More...
Posted 25 February 08 12:32 by Tom | 3 Comments
Filed under ASP.NET, Debugging, .NET, Exceptions

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