w3wp.exe crash - faulting module iisfcgi.dll  [Answered]RSS

7 replies

Last post Sep 05, 2013 12:04 PM by networkengineer49

  • w3wp.exe crash - faulting module iisfcgi.dll

    Aug 08, 2013 01:08 PM|networkengineer49|LINK

    I am running a shared hosting web farm with 3,000+ websites,  as I load more and more client websites using wordpress on top of PHP v5.3, i see more and more errors like this

    Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7a5f8

    Faulting module name: iisfcgi.dll, version: 7.5.7601.17514, time stamp: 0x4ce7b85c

    Exception code: 0xc0000005

    Fault offset: 0x000070d3

    Faulting process id: 0x3f40

    Faulting application start time: 0x01ce94480840b41e

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

    Faulting module path: C:\Windows\System32\inetsrv\iisfcgi.dll

    Report Id: a71ad58a-0043-11e3-8a26-00155d1e434

     

    analyzing the dump file returns this issue:

     

    Unhandled exception at 0x730b711b (iisfcgi.dll) in WERBE76.tmp.mdmp: 0xC0000005: Access violation reading location 0x00000000.

    iisfcgi.dll!File_listener::HandleChangeNotification() + 0x154 bytes

     

    Can i get an idea where to go from here to resolve these errors?

    I share app pools with about 20 sites in each.  The app pools effected seem to be random and fail in groups when this error occurs.

     

    Regards,

     

    Greg

  • Re: w3wp.exe crash - faulting module iisfcgi.dll

    Aug 09, 2013 02:14 AM|lextm|LINK

    Sounds like a bug in the FastCGI module.

    You can only open a support case via http://support.microsoft.com and share the dump with Microsoft support guys. They should tell if there is a hotfix for you to apply.

    Lex Li
    https://lextudio.com
    ---------------------------
    This posting is provided "AS IS" with no warranties, and confers no rights.
  • Re: w3wp.exe crash - faulting module iisfcgi.dll

    Aug 09, 2013 11:31 PM|Angie xu - MSFT|LINK

    Hi Greg

    Besides Lex mentioned above, to determine what causes these issues, you must analyze the process state at the time of the failure. you can also use Debug Diagnostic Tool v1.1 (DebugDiag) to analysis possible reason of this issue,

    Regards

    Angie xu

    MSDN Community Support
    Please remember to "Mark as Answer" the responses that resolved your issue.
  • Re: w3wp.exe crash - faulting module iisfcgi.dll

    Aug 11, 2013 10:12 PM|kctt|LINK

    Do you get any error on website or just error log?

    Wordpress and shared application pool do not work well together.

    I think there's something to do with session handling of wordpress sites sharing same application pool.

  • Re: w3wp.exe crash - faulting module iisfcgi.dll

    Aug 14, 2013 09:24 AM|networkengineer49|LINK

    Failed request tracing logs show 404 errors.  but they are not permanent. after the app pool crashes the content is delivered. 

     

    the results i posted above are from debug diag 1.2

  • Re: w3wp.exe crash - faulting module iisfcgi.dll

    Aug 18, 2013 10:22 PM|Angie xu - MSFT|LINK

    Hi,

    I think you could consider submitting this issue to Microsoft connect site, our engineers will look into this issue according to the proof you provide, and we will evaluate this issue seriously, and give quick and positive response for you,

    Best regards

    Angie xu

    Angie xu

    MSDN Community Support
    Please remember to "Mark as Answer" the responses that resolved your issue.
  • Re: w3wp.exe crash - faulting module iisfcgi.dll

    Aug 22, 2013 11:58 AM|networkengineer49|LINK

    How do I submit this on the Microsoft Connect site?

    Server 2008 Feedback has been closed and there are no options for IIS or any product related to this issue

  • Re: w3wp.exe crash - faulting module iisfcgi.dll

    Sep 05, 2013 12:04 PM|networkengineer49|LINK

    Here is the solution from Microsoft:


    Hi Greg,

     

    Based on the dump, the crash seems to be related to Monitor changes to file setting.  It is checking C:\Program Files (x86)\PHP\v5.3\php-cgi.ini when the issue happening.

     

    Action Plan

    =======

    Please disable Monitor changes to file setting in FastCGI and keep monitor.

    FastCGI Settings

     

     

    Best Regards,

     

    Anik Shen | Developer Support for Internet Team| Customer Service & Support, Asia Pacific & Greater China Region