Parallels H-Sphere uses some of ASP.NET features. That is why ASP.NET should already be installed before installing or upgrading Parallels H-Sphere on a Winbox.
Note ASP.NET Framework 4.0 is supported only in Windows 2008 since Parallels H-Sphere 3.4.
To enable ASP.NET 4.0 hosting on your Parallels H-Sphere Winbox:
1. Install ASP.NET Framework 4.0 according to the installation instructions;
2. Restart Parallels H-Sphere Winbox service - run in command prompt:
net stop hsphere net start hsphere
To choose ASP.NET version for particular domain go to
Domain Info -> Web Service -> ASPNET