Skyrim Skse 1.6.640 May 2026

Skyrim Special Edition (Anniversary Edition) version 1.6.640 , you need SKSE build 2.2.3 Quick Setup Guide

: Get the "Current Anniversary Edition build 2.2.3 (game version 1.6.640)" from the official SKSE website Nexus Mods

: Extract the files and move everything inside the folder directly into your Skyrim game directory (where SkyrimSE.exe is located). Do install it through a mod manager like a normal mod. : From now on, you start your game using skse64_loader.exe : In the main menu, open the console (tilde key ) and type getskseversion . If it returns a version number, it is working correctly. Troubleshooting Tips Version Mismatch

: If you accidentally updated to a newer version (like 1.6.1130 or 1.6.1170), you can use the Steam Console to download the 1.6.640 depots and revert your game files. Error Code 1 : If you see this error in

, it means SKSE is either not running or was installed incorrectly. Steam Community essential mods that require this specific version?

Guide :: Revert SSE to version 1.6.640 or 1.6.1130 - Steam Community

These video guides provide visual step-by-step instructions for installing and configuring SKSE for Skyrim version 1.6.640:

The Complete 2025 Guide to Using Skyrim Script Extender (SKSE) GamerPoets Install SKSE | MO2 & Vortex | How To Mod Skyrim SKSE Script Extender | How To Install SKSE64 Guide 2022 skyrim skse 1.6.640

Installing the Skyrim Script Extender (SKSE) for version 1.6.640 (often referred to as the "Anniversary Edition" or "AE" build on Steam) is a critical step for using advanced mods. This version requires specific attention because it differs from the older 1.5.97 "Special Edition" and the more recent 1.6.1130+ updates. 1. Identify Your Game Version

Before downloading, confirm you are actually on version 1.6.640.

How to check: Go to your Skyrim Special Edition folder (usually Steam\steamapps\common\Skyrim Special Edition), right-click SkyrimSE.exe, select Properties, and look at the Details tab under "Product version".

Note: If Steam has auto-updated your game beyond 1.6.640, you may need a "downgrader" tool if you specifically need this version for mod compatibility. 2. Download the Correct SKSE Files

You must use the specific build designed for the game's executable version. Visit the official SKSE website.

Look for the build labeled "Current Anniversary Edition build" that corresponds to game version 1.6.640.

Warning: Do not use the "VR" or "Classic" versions; they are incompatible with version 1.6.640. 3. Manual Installation Steps Skyrim Special Edition (Anniversary Edition) version 1

Extract the Archive: Open the downloaded .7z file using a tool like 7-Zip or WinRAR.

Copy Executables: Locate skse64_loader.exe and skse64_1_6_640.dll. Drag and drop these directly into your Skyrim Special Edition root folder (where the game's .exe is located), not the Data folder.

Copy Scripts: Open the Data folder inside the SKSE archive. Drag the Scripts folder into your game's Data folder. If asked to overwrite, click Yes. 4. Configure Your Mod Manager You must launch the game via SKSE for it to work.

Vortex: It should automatically detect SKSE. On the Dashboard, click the three dots next to the SKSE icon and select "Make Primary".

Mod Organizer 2 (MO2): If it doesn't auto-detect, click the gear icon (Modify Executables), click the + symbol, and navigate to the skse64_loader.exe in your game folder to add it. 5. Verify the Installation To ensure everything is running correctly:

Launch the game through your mod manager using the SKSE Loader.

Once at the main menu, open the console by pressing the tilde key (~). Type getskseversion and press Enter. UI functions for manipulating the HUD and menus

It should return "SKSE64 version: 2.2.3" (or similar) and confirm it is loaded.

For version 1.6.640, you must use SKSE version 2.2.3. This specific build of the Skyrim Script Extender (SKSE) is the most compatible and final version for that game runtime. Finding the Correct SKSE Build

Since Skyrim has been updated past 1.6.640 (e.g., to 1.6.1170), the latest SKSE build on the main site will not work for you. You need to download the archived version:

Here’s a useful feature breakdown for Skyrim SE using SKSE64 version 1.6.640 (the pre-Anniversary Edition "Game Pass / GOG / Steam" build, typically for game version 1.6.640).

If you run SKSE64 1.6.640, you have access to a specific set of mod features not possible in vanilla. Below are the most practical ones:

2.3 Papyrus Function Additions

Version 1.6.640 exposes over 200 additional native functions compared to vanilla, including:

UI functions for manipulating the HUD and menus.
Actor extended functions (e.g., GetEquippedWeaponType).
Input scripting for handling keyboard/mouse events beyond the native action mapping.

⚠️ Mods That DO NOT Work on 1.6.640

.NET Script Framework (Last update for 1.5.97). There is no working version for any 1.6.x build.
No Grass in Objects (Also 1.5.97 only, unless using a very risky beta).
Ultimate Combat (Partially works, but some features rely on old .NET).

If you see a mod that says "Requires 1.5.97," do not use it on 1.6.640. You will CTD.

4.1 SkyUI (Version 5.2SE)

Although SkyUI itself is not a DLL mod, its MCM (Mod Configuration Menu) relies heavily on SKSE’s extended UI functions. With SKSE 1.6.640, SkyUI functions without issue, but third-party MCM add-ons needed updates due to a change in how UICallback handles strings.