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Handler “Elmah” has a bad module “ManagedPipelineHandler” in its module list

By ITmeze on February 23rd, 2011

Elmah - awesome library for asp.net that enable to log exceptions (as well as those that end up with Yellow screen of death). It comes with a great module and a handler used to view error logs. It really helps a lot. I used that in literally every web project I have made.

Yesterday, I was installing new project on fresh Windows Server 2008 R2.

I ended up with an error: Handler “Elmah” has a bad module “ManagedPipelineHandler” in its module list.

After hour of goggling I couldn’t find a solution that would solve my problem (reinstalling asp.net, changing ISAPI restrictions). Nothing helped. Then I have found out that problem lies in IIS7 configuration part in my web.config.

<system.webServer>
  <modules>
    <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
  </modules>
  <handlers>
    <add name="Elmah" path="elmah.axd" verb="POST,GET,HEAD" type="Elmah.ErrorLogPageFactory, Elmah" preCondition="integratedMode"   />
  </handlers>
</system.webServer>

My set up was done based on dotnetslackers article, and I simply copied their pre IIS7 configuration to system.webserver part. The part that I was missing was preCondition=”integratedMode” attribute for a handler.

Hope that helps someone

Related posts:

1. Manually forcing ELMAH to log exception
2. Redirect to new domain after rebranding with IIS Url Rewrite Module
3. Validate max file size during upload in asp.net mvc

One Response to “Handler “Elmah” has a bad module “ManagedPipelineHandler” in its module list”

1. Theodros Begashaw says:

   May 10, 2011 at 5:43 am

   great post. I received the exact same error message and solved it by using your recommendation