Had this error also:
HTTP Error 500.21 - Internal Server Error
Handler "PageHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list
following found here - http://www.gotknowhow.com/articles/fix-bad-module-managedpipelinehandler-in-iis7
- Run program command line:
run %windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe –i
If you want to open it using the Run program, just type in "Run" in the Windows 7 search box, then use the following line below in the Open box, then click OK:
%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe –i
Note if your computer is 64 bit, then I would change the line to:
%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe –i
Hopefully, these solutions help get you up and running and fix the IIS7 error... Handler "PageHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list.
more help:
http://forums.asp.net/t/1480233.aspx
This is most likely because your framework did not install correctly.
Run
%windir%\Microsoft.NET\Framework\v4.0.21006\aspnet_regiis.exe -i
Note that the version of the framework must be correct. You may want manually browse to you Famework folder, typically
c:\Windows\Microsoft.NET\
Tags: Sitefinity 3.7, asp.net, IIS 7.5