I am trying to set up AD FS 2.0 on a Windows Server 008 R2 Enterprise, but I am stuck on getting an error when trying to run the "AD FS 2.0 Federation Server Configuration Wizard":
The error states that "Microsoft .NET Framework 3.5 is required for the initial configuration wizard to run". I am absolutely certain that .NET 3.5 is installed on the server, yet the error message pops up, preventing me to complete the installation. The error dialog suggests "re-running the AD FS Installer". I have tried this, but it does not change a thing.
Has anyone seen this erroneous error before? Any ideas how to make it go away?