Unable to open any feature in IIS 7.0 Manager for a particular site

for a server with Windows 2008 x64 and Parallels Panel is installed if you can open some features via

IIS 7.0 manager then the solution is:

as described here: http://kb.parallels.com/8211

The problem is that when the runtime tries to load the corresponding configuration, it does not take the bit-ness of the application pool into the consideration.  ASP.NET 1.1 is only supported on 32-bit.  So if a 64-bit OS is used, in order to run ASP.NET 1.1, it is necessary to enable 32-bit applications in the application pool.  So, with the QFE/SP2 on 64-bit OS (and only on 64-bit OS), the runtime is incorrectly looking for the 1.1 version of the configuration under Framework64, which does not exist.

If ASP.NET 1.1 is already installed on the 64-bit Windows, it is possible to workaround the case by coping of 32-bit configuration file as a 64-bit one:

1. Create the Framework64 directory for the 1.1 ASP.NET:

md %windir%\microsoft.net\framework64\v1.1.4322\config\

2. Copy the 32-bit configuration file to the created path:

copy %windir%\microsoft.net\framework\v1.1.4322\config\machine.config %windir%\microsoft.net\framework64\v1.1.4322\config\
Test and working!