*HTTP Error 500.21 - Internal Server ErrorHandler “handlers/exchange.axd_*”

0
votes

We upgrade our Windows server from Framework v2 to v4, and from iis 6 to iis 8.5. Some sites still use the same framework v2, but one of them get this kind of error :

HTTP Error 500.21 - Internal Server ErrorHandler "handlers/exchange.axd_" has a bad module "ManagedPipelineHandler" in its module list *

This was working in the old server. Now we have Windows 2012 R2

in web.config :

If I run this %windir%\Microsoft.NET\Framework\v4.0.21006\aspnet_regiis.exe -i I am afraid to change the framework for other sites.

Is there a way to specify the framework in Web.config or IIS ? How could solve this 500 error ? any ideas ?

We changed the framework for this site from .NET CLR V.2.05.xxxxx Classic to .Net CLR v4.0.21006 Integrated on IIS.

I imagine that preCondition=IntegratedMode works too, I didn't tested.

Thanks

2
asp.netiis

2 Answers

2
votes

My problem was that I got the error

HTTP Error 500.21 - Internal Server Error
Handler "ExtensionlessUrlHandler-Integrated-4.0" has a bad module "ManagedPipelineHandler" in its module list

My solution was to

  1. Run cmd as Administrator end type:

    dism /online /enable-feature /featurename:IIS-ASPNET45 /all

  2. Restart IIS

This solution is from this SO question.

0
votes

you have to change the handlers property in web.config to 

preCondition="integratedMode"

just go through the link of MSDN with explaination http://blogs.msdn.com/b/tmarq/archive/2007/08/30/iis-7-0-asp-net-pipelines-modules-handlers-and-preconditions.aspx