Note: I assume the subject is Final Fantasy XV: Windows Edition and a specific build/version tag (v1138403 A...)—likely referring to a Windows Edition patch/build identifier. This document covers the Windows Edition, common issues related to updates/versions, actionable setup and troubleshooting steps, performance tuning, mods and community tools, save and migration notes, and verification/checksum steps tied to builds. If you need specifics for a particular build number (e.g., exact patch notes for v1138403), say so and I will search for up-to-date patch notes. Overview Final Fantasy XV: Windows Edition (FFXV-Win) is the PC port of Final Fantasy XV, featuring higher-resolution textures, HDR support, unlocked framerate, additional photo and camera tools, and PC-specific options such as ultra-wide monitor support and mods compatibility. Windows Edition has received multiple updates/patches since release; builds are often identified by internal version numbers (e.g., v1.x.x or build hashes).