As stated in official sources, SKSE does not support the Windows Store, Game Pass, or Epic Games Store versions of Skyrim. Step-by-Step Installation Guide (1.6.640)
The definitive, final version of SKSE built for Skyrim version 1.6.640 is . (Note: Versions 2.2.1 and 2.2.2 also support 1.6.640, but 2.2.3 includes the most comprehensive engine bug fixes). 2. Where to Download skyrim+skse+16640+2021
┌───────────────────────────────────────┐ │ Nov 2011: Classic Skyrim (32-bit) │ └───────────────────┬───────────────────┘ ▼ ┌───────────────────────────────────────┐ │ Oct 2016: Special Edition 1.5.97 │ └───────────────────┬───────────────────┘ ▼ ┌───────────────────────────────────────┐ │ Nov 2021: Anniversary Edition Launch │ └───────────────────┬───────────────────┘ ▼ ┌───────────────────────────────────────┐ │ Sep 2022: Final Stable Build 1.6.640 │ └───────────────────┬───────────────────┘ ▼ ┌───────────────────────────────────────┐ │ Dec 2023+: Marketplace Updates (1.11+)│ └───────────────────────────────────────┘ As stated in official sources, SKSE does not
Almost all major SKSE plugins (DLL files) from the 2021-2023 era were updated to support 1.6.640. As stated in official sources
Usually: C:\Program Files (x86)\Steam\steamapps\common\Skyrim Special Edition . 4. Install Scripts
in late 2023/early 2024, which further complicated the modding landscape. The SKSE Link: Ensuring Compatibility