IIS Hatası : Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its module list

If you installed .Net Framework 4.0 first then reinstalled IIS, you need to run aspnet_regiis to fix the error “Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its module list”.

Depends on the current version of .Net Framework, you need to run it in different directory.

C:\Windows\system32>cd %windir%\Microsoft.NET\Framework

C:\Windows\Microsoft.NET\Framework>dir
Volume in drive C has no label.
Volume Serial Number is 38B0-DC9D

Directory of C:\Windows\Microsoft.NET\Framework

07/13/2009  09:20 PM    <DIR>          v1.0.3705
07/13/2009  09:20 PM    <DIR>          v1.1.4322
03/08/2011  11:05 AM    <DIR>          v2.0.50727
02/17/2010  09:09 PM    <DIR>          v3.0
12/10/2010  01:00 AM    <DIR>          v3.5
03/23/2011  10:16 PM    <DIR>          v4.0.30319

C:\Windows\system32>%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe -i
Start installing ASP.NET (4.0.30319).
………..
Finished installing ASP.NET (4.0.30319).