In summary, while there isn't a single download button for DirectX 11.1 64-bit, keeping your Windows environment updated is the key to maintaining a healthy, high-performance graphics stack.
This article explains exactly how to get DirectX 11.1 on a 64-bit PC, which Windows versions support it, and how to verify installation. directx 11.1 download 64 bit
For 99% of users, on Windows 8 and newer. Searching for a standalone download is unnecessary. Instead: In summary, while there isn't a single download
Instead, DirectX 11.1 is tightly integrated into the Windows operating system architecture. Here is what you need to know about obtaining it for your 64-bit machine. which Windows versions support it