Handler ExtensionlessUrlHandler-Integrated-4 0 has a bad module ManagedPipelineHandler in its module list

Question

To be honest  I ve tried to turn a dirty trick on IIS and just when I thought that I was going to get away with it  I realized my workaround doesn t work  Here s what I ve tried to do   1  I have ASP NET application which has Preloader class that inherits IProcessHostPreloadClient and does all the heavy initialization in Preload method implementation  application is complex and it s a part of an enormous system  so it requires approximately 2 minutes to establish connections to all necessary services and pre-instantiate some Unity registrations    2  I have a lot of work that needs to be done on application shutdown  unsubscribing  disconnecting  disposing       and I guess the best place to do it is in  Application End  method located in Global asax   3  Everything works just fine when I have user activity  first request after the Application Pool that contains aforementioned web application is started will cause  Application Start  to be called and afterwards  Application End  is called on Application Pool stop or recycle   but problems occur when there is no user activity and application tries to restart itself after being active for 48 hours  configured requirement   Since there was no requests  application officially didn t get started  Ergo  it can t be gracefully stopped since  Application End  won t be called   4  Now comes the messy part    I ve tried to make a GET request from code at the end of the Preload method  and it worked  But this solution seemed bad to me  even though it worked  So  I ve tried a lot of things  and the last thing I tried was this   SimpleWorkerRequest swr   new SimpleWorkerRequest string Empty  string Empty  tw   HttpRuntime ProcessRequest swr         and that has done it s purpose   Application Start  was called   I ve checked response  it was containing login page that was supposed to be displayed in initial request  and on Application Pool shutdown application ended gracefully by doing necessary work in  Application End    BUT  After the application was started  preloaded and initiated  in this manner  this is what happened when I wanted to reach application via Web browser      HTTP Error 500 21 - Internal Server Error   Handler  ExtensionlessUrlHandler-Integrated-4 0  has a bad module  ManagedPipelineHandler  in its module list   I am unable to figure this out  Can anybody tell me why this happens and how to fix it   If I don t figure this out  I will go back to first solution  sending GET request from code  but this problem will bug me since I don t even have an idea what s wrong

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For me  removing WebDAV from my server caused the application to return a 503 Service Unavailable Error message when using PUT or DELETE  so I re-installed it back again   I also tried completely removing  NET Framework 4 5 and reinstalling it and also tried re-registering as suggested but to no avail   I was able to fix this by disabling WebDAV for the individual application pool  this stopped the  bad module  error when using PUT or DELETE   Disable WebDAV for Individual App Pool    Click the affected application pool Find WebDAV Authoring Tools in the list Click to open it Click Disable WebDAV in the top right    Ta daaaa   I still left the remove items in my web config file     lt system webServer gt       lt modules gt         lt remove name  WebDAVModule   gt       lt  modules gt       lt handlers gt         lt remove name  WebDAV    gt       lt  handlers gt    lt system webServer gt    This link is where I found the instructions but it s not very clear

User · Answer

I also ran into that problem  My MVC4 App is running on a Windows Server 2012 R2 with IIS 8 5  None of these posted solutions worked for me   installing the missing frameworks through IIS Features could have solved it but the installation always failed    I had to use the Web Platform Installer and installed the following packages

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Run one of these commands    For 32 Bit Windows OS   c  Windows Microsoft NET Framework v4 0 30319 aspnet regiis exe -i   For 64 Bit Windows OS   c  Windows Microsoft NET Framework64 v4 0 30319 aspnet regiis exe -I

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This maybe not a usefull solution for OP but it concerns the same  error  message   We are hosting PHP pages on IIS8 5 with  NET 4 5 installed correctly   We make use of the preload functionality to make sure our application is always responsive across the board   After a while we started getting this error at random   In the web config   I put skipManagedModules to true  -  don t do this    lt  xml version  1 0  encoding  UTF-8   gt   lt configuration gt     lt system webServer gt   lt applicationInitialization skipManagedModules  false  doAppInitAfterRestart  true  gt     lt add initializationPage       gt   lt  applicationInitialization gt        Although website is php   the routing to the paging is managed by the modules

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In my case  Windows 10   IIS 10  i had to open  Turn Windows Features On or Off  and then go to Internet Information Services   World Wide Web Services   Application Development Features   and check ASP NET 4 6

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I had this problem and found that removing the following folder helped  even with the non-Express edition Express   C  Users  lt user gt  Documents IISExpress

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Installing  NET 4 7 worked for me  I only had 3 5 installed prior

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The problem  You are using SimpleWorkerRequest in a scenario that it wasn t designed for  You are using it inside of IIS  If you look at the prior MSDN link  emphasis is mine       Provides a simple implementation of the HttpWorkerRequest abstract class that can be used to host ASP NET applications outside an Internet Information Services  IIS  application  You can employ SimpleWorkerRequest directly or extend it    Also  if you look at the MSDN documentation for the System Web Hosting namespace   SimpleWorkerRequest is in this namespace   you will also see something similar to the above  again  emphasis is mine       The System Web Hosting namespace provides the functionality for hosting ASP NET applications from managed applications outside Microsoft Internet Information Services  IIS     The solution  I would recommend removing the call to SimpleWorkerRequest  Instead  you can use a Microsoft solution to make sure your web site automatically starts up after it recycles  What you need is the Microsoft Application Initialization Module for IIS 7 5  It is not complicated to configure  but you need to understand the exact options  This is why I would also recommend the Application Initialization UI for IIS 7 5  The UI is written by an MSDN blogger   So what exactly does the Microsoft solution do  It does what you are trying to do - IIS sends a  get  request to your website after the application pool is started

User · Answer

This error started happening to me out of nowhere last week  affecting the existing web sites on my machine  I had no luck with it trying any of the suggestions here  Eventually I removed WebDAV from IIS completely  Windows Features -  Internet Information Services -  World Wide Web Services -  Common HTTP Features -  WebDAV Publishing   I did an IIS reset after this for good measure  and my error was finally resolved   I can only guess that a Windows update started the issue  but I can t be sure

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Despite following most of the advice on this page  I was still getting problems on Windows Server 2012  Installing  NET Extensibility 4 5 solved it for me   Add Roles and Features  gt  Server Roles  gt  Web Server  IIS   gt  Web Server  gt  Application Development  gt   NET Extensibility 4 5

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For Windows 10   Windows Server 2016 use the following command   dism  online  enable-feature  featurename IIS-ASPNET45  all  The suggested answers with aspnet regiis doesn t work on Windows 10  Creators Update and later  or Windows Server 2016      C  Windows Microsoft NET Framework v4 0 30319 aspnet regiis exe -i   Microsoft  R  ASP NET RegIIS version 4 0 30319 0   Administration utility to install and uninstall ASP NET on the local machine    Copyright  C  Microsoft Corporation   All rights reserved    Start installing ASP NET  4 0 30319 0     This option is not supported on this version of the operating system   Administrators should instead install uninstall ASP NET 4 5  with IIS8 using the  Turn Windows Features On Off  dialog   the Server Manager management tool  or the dism exe command line tool   For more details please see http   go microsoft com fwlink  LinkID 216771    Finished installing ASP NET  4 0 30319 0     Interestingly  the  Turn Windows Features On Off  dialog didn t allow me to untick  NET nor ASP NET 4 6  and only the above DISM command worked  Not sure whether the featurename is correct  but it worked for me

User · Answer

I m working on Windows Server 2012   NET Extensibility 4 5 feature is on  WebDAVModule removed   I was still getting 500 21 error on ASP NET route   docs    Changing  skipManagedModules  to false fixed the problem    lt applicationInitialization doAppInitAfterRestart  true  skipManagedModules  false  gt           lt add initializationPage   docs    gt       lt  applicationInitialization gt    Thanks to https   groups google com forum   topic bonobo-git-server GbdMXdDO4tI

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This https   stackoverflow com a 13266763 1277458 works perfectly  But if you have 64-bit operation system use Framework64 instead of Framework in path   c  Windows Microsoft NET Framework64 v4 0 30319 aspnet regiis exe -i

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I solved this problem  adding in  Turn Windows features on or off  The option ASP NET 4 7

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If you re running into this error with Windows 8 Windows Server 2012 and  Net 4 5 follow these instructions here  http   www britishdeveloper co uk 2013 01 handler-extensionlessurlhandler html  Go to  turn Windows features on or off  Then Internet Information Services Then World Wide Web Services Then Application Development Features And then enable ASP NET 4 5  This worked for me  although the wizard and wording is a little different in Windows Server 2012  but you ll figure it out   With this being said  why this is necessary after installing everything through the Web Platform Installer including all of the dependencies is completely beyond me

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I know this is an oldie  but thought I might add some value  For those of us running Server Core outside of a domain  domain members can just run Server Manager remotely to add remove features roles   you have to resort to command lines   Powershell users can type  Install-WindowsFeature Web-Asp-Net45   That should be equivalent to using server manager

User · Answer

You could fix it by change the  ExtensionlessUrlHandler-Integrated-4 0  type in iis to System Web DefaultHttpHandler

User · Answer

Making this its own post because this had me going for hours   I saw maybe a dozen of similar posts here and elsewhere about this problema and the aspnet regiis fix   They weren t working for me  and aspnet regiis was acting odd  just listing options etc    As user ryan-anderson above indicated  you cannot enter  exe  For those less comfy with things outside IIS on the server  here s what you do in simple steps    Find aspnet regiis in a folder similar to this path   c  Windows Microsoft NET Framework v4 0 30319    Right-click command prompt in the start menu or wherever and tell it to run as administrator   Using the windows  Run  feature just won t work  or didn t for me  Go back to the aspnet regiis executable   Click-drag it right into the command prompt or copy-paste the address into the command prompt    Remove  if it s there  the  exe at the end   This is key   Add the -i  space minus eye  at the end   Enter    If you did this correctly  you will see that it starts to install asp net  and then tells you it succeeded

User · Answer

Try to re-register ASP NET with aspnet regiis -i  It worked for me   A likely path for  NET 4  from elevated command prompt    c  Windows Microsoft NET Framework v4 0 30319 aspnet regiis exe -i   http   forums iis net p 1190643 2026401 aspx

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I was challenged by the same error message  with  net 4 7 installed  The solution was to follow one earlier mentioned post to go with the  quot Turn Windows feature on or off quot   where the  quot  NET Framework 4 7 Advanced Services quot  -- gt   quot ASP NET 4 7 quot  already was checked  Further down the list  there is the  quot Internet Information Services quot  and subnote  quot Application Development Features quot  -- gt   quot ASP NET 4 7 quot   that also needs to be checked  When enabling this  allot of other features are enabled    I simply pressed the Ok button  and the issue was resolved  Screendump of the windows features dialog

User · Answer

Make sure that you have set your application-site version from v2 0 to v4 0 in IIS Manager      Application Pools   Your Application   Advanced Settings    NET Framework Version    After that  install your ASP NET    For 32-Bit OS  Windows       C  Windows Microsoft NET Framework v4 0 30319 aspnet regiis exe -i   For 64-Bit OS  Windows       C  Windows Microsoft NET Framework64 v4 0 30319 aspnet regiis exe -i   Restart your application-site in IIS Manager and enjoy

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I was facing this issue in a web application hosted on a shared hosting server  So obviously did not have direct access to IIS  so could not apply many solution proposed here    On the hosting provider s control panel I enabled error logging for IIS and ASP Net  And then got to know that error actually lied in a missing cshtml

[c#] Handler "ExtensionlessUrlHandler-Integrated-4.0" has a bad module "ManagedPipelineHandler" in its module list

Disable WebDAV for Individual App Pool:

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