1.0 e 1.1 não são suportados em 2012 R2. 2.0 está incluído no framework 3.51.
It is not possible to manually install the .NET Framework 1.1 on Windows 8, Windows 8.1, Windows Server 2012, or Windows Server 2012 R2. It is no longer supported. If you try to install the package, the following error message is displayed: "Setup cannot continue because this version of the .NET Framework is incompatible with a previously installed one." To solve this problem, install the .NET Framework 3.5 SP1. This version includes the .NET Framework 2.0 (the release that follows the .NET Framework 1.1), which is supported on Windows 8 and Windows 8.1. You should always try to install the application first to determine if it will automatically be updated to a later version of the .NET Framework. If it does not, contact your ISV for an application update.