Faulting application name: w3wp.exe Faulting module name: nlssorting.dll Exception code: 0xc00000fd


On my development server I got following error.

Faulting application name: w3wp.exe, version: 7.5.7600.16385, time stamp: 0x4a5bcd2b

Faulting module name: nlssorting.dll, version: 4.0.30319.1, time stamp: 0x4ba1d8ae

Exception code: 0xc00000fd

Fault offset: 0x000020d5

Faulting process id: 0xae4

Faulting application start time: 0x01d049af7c9369d8

Faulting application path: C:\Windows\SysWOW64\inetsrv\w3wp.exe

Faulting module path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\nlssorting.dll

Report Id: 44dd0b77-b627-11e4-96f4-005056aa293f

Can any one told me what may be the issue or how can I identify what is the issue?


1 Answer


I had a similar problem with IIS Crash. The exception code "0xc00000fd" is a stack over flow, and likely there is a piece of code in your application that was throw this exception.

How you can identify this? I recommend that you catch a crash dump.

1) Install a software to get a crash dump. I recommend the DebugDiag Tools.

2) After the installation, configure the DebugDiag Tool following these instructions:

  • Selecting a Crash rule Selecting a IIS App pool (w3wp.exe)
  • Selecting the app pool of application
  • Configuring a Stack over flow exception (0xc00000fd) in Advanced Settings/Exceptions and finish the setup.

3) Wait for a first crash dump to be created in folder location. Ex: C:\DebugDiag\Logs. When the crash dump was created, use the DebugDiag Analysis to open the file from C:\DebugDiag\Logs and a HTML report will be created.

4) In report you see quickly the problem in analysis summary on the top of the page. In my case, there was a recursive function without stop conditional that leading the app poll fall.

answered on Stack Overflow Mar 2, 2015 by André Agostinho

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