Registering ASP.NET File Mapping on Vista for IIS 7

[Icon Iconoclast]

I had installed .NET 3.5 SP1 Framework before installing IIS 7. I now need
to registering the ASP.NET File Mapping.
When I'm running
C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -I, however,
I'm getting the message:

An error has occurred: 0x800702e4 The requested operation requires
operation.

What is the solution?

 

[Juan T. Llibre]

re:
!> What is the solution?

Try, first, running :

aspnet_regiis.exe -u

and then, running :

aspnet_regiis.exe -i