I came across with this error yesterday and just had to share it.
CAUSE: You have installed Internet Information Services (IIS) after the installation of .NET Framework 2.0
RESOLUTION: Repair your .NET Framework 2.0 by running the following command line to reset the IIS registry settings for aspnet user.
CAUSE: You have installed Internet Information Services (IIS) after the installation of .NET Framework 2.0
RESOLUTION: Repair your .NET Framework 2.0 by running the following command line to reset the IIS registry settings for aspnet user.
C:\WINDWOS\Microsoft.NET\Framework\v2.0.50727>aspnet_regiis -i