. Newer versions of SKSE, such as 2.2.5 or 2.2.6, are designed for more recent game updates (like 1.6.1170) and will cause compatibility errors. Essential Version Guide Compatible Version Skyrim Runtime SKSE64 Build Address Library Anniversary Edition (v8 or later) Installation Steps Download SKSE 2.2.3 : Locate this version in the SKSE Archived Builds or the "Old Files" section of SKSE64 on Nexus Mods Extract Files skse64_loader.exe skse64_1_6_640.dll skse64_steam_loader.dll directly into your Skyrim root folder (where SkyrimSE.exe is located). Data Folder : Copy the contents of the Data/Scripts folder from the SKSE archive into your game's Data/Scripts Run via Loader : Always launch the game using skse64_loader.exe . You can set this as the primary tool in or Mod Organizer 2. Important Modding Tips
: If your game crashes on startup, a DLL mod (like an old version of NetScriptFramework ) is likely the culprit. You must either update these mods or remove them. skyrim+skse+16640+2021
Because SKSE64 for 1.6.640 did not exist immediately (and many core mods like SkyUI or Address Library were broken), the majority of the serious modding community refused to update. Players used tools like the "Skyrim SE Downgrader" to revert their Steam installations back to version 1.5.97 . Data Folder : Copy the contents of the
: Steam will constantly try to update you to the latest version (which breaks SKSE). You must use workarounds, like setting the manifest to "read-only" or launching exclusively through SKSE, to stay on 1.6.640. You must either update these mods or remove them