Directx 11.1 Offline Installer Info

Microsoft never released a DirectX 11.1 standalone offline installer as a separate download. The DirectX End-User Runtime Web Installer (June 2010) installs up to 11.0, but 11.1 is included only via Windows Update (specifically KB2670838 on Windows 7 SP1). So a true "offline installer for DirectX 11.1" technically does not exist — the proper feature in practice is: "Install KB2670838 offline via Microsoft Update Catalog .msu file."

How to install the latest version of DirectX - Microsoft Support directx 11.1 offline installer