I am trying to re-install ASP.NET on IIS7 running in Win7/64, which magically stopped working all of as sudden.
When I run aspnet_regiis -i, I get an error message that says
Finished installing ASP.NET (4.0.30319).
Setup has detected some errors during the operation. For details, please read the setup log file C:\Users\username\AppData\Local\Temp\ASPNETSetup_00031.log
Looking at the log, it reports
Failure Changing IIS ApplicationHost.config: IIS7Register failed with HRESULT 800700b7: 'Cannot create a file when that file already exists. '
The real problem surfaces when trying to access an ASP.NET web page from that server:
HTTP Error 500.21 - Internal Server Error
Handler "PageHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list
and
Most likely causes:
Managed handler is used; however, ASP.NET is not installed or is not installed completely.
There is a typographical error in the configuration for the handler module list.
So it seems ASP.NET has NOT been properly re-installed. Now, I am aware of the alleged one-and-only remedy for this, repeated all over the Web, and referenced for example here:
http://blogs.msdn.com/b/dougste/archive/2010/09/06/errors-installing-asp-net-4-0.aspx
Except that the proposed solution does not work for me. I have expanded the %windir% macros within isapiCgiRestriction section for .NET 4.0 - and aspnet_regiis still fails for me.
Any other ideas?
