The foundation for "Altum Pro" is the (Build 14393), which was officially released on August 2, 2016. Key features introduced in this official version include:

: Microsoft currently recommends Upgrading to Windows 11 or using the latest version of Windows 10 (Version 22H2) to ensure system safety. Windows 10 Version 1607 (Base) Modern Windows 10 (22H2) Official Support Ended (April 2018) Ends Oct 14, 2025 Security Patches Primary Focus Windows Ink, Cortana Stability, Security DirectX Support Older versions DirectX 12 Ultimate

: The first stable appearance of an environment to run Linux binaries on Windows. Understanding the "Altum Pro" Variant

: Because these files are "verified" only by the person who modified them, they may contain hidden malware, disabled security features (like Windows Defender), or outdated drivers that leave your system vulnerable. Critical Support Information

Modified versions like "Altum Pro" or other "lite" builds are typically created by third-party developers who use tools to strip out components of the OS.

: Official support for these editions ended on April 10, 2018 .

The keyword "" refers to a modified or "custom" version of the Windows 10 operating system, based on the Version 1607 (Anniversary Update) release . While these "Pro" or "Lite" builds are often popular in niche tech circles for their reduced system footprint, they are not official Microsoft releases and carry significant security risks. What is Windows 10 Version 1607?