Unofficial Skyrim Special Edition Patch - USSEP

⭐ ⭐⭐⭐⭐⭐ (473,922 endorsements) 📥 27.0M downloads 📌 v4.3.8a 📅 10/26/2016
🟡 Updated this year

By The Unofficial Patch Project Team · Bug Fixes

⬇ Download Mod Source: Nexus Mods 📅 Updated: 3/21/2026 📅 Created: 10/26/2016
⚠️ Install Order · 5 steps
1🛠️ SKSE64 — Skyrim Script Extender 64 Download ↗
2🔧 USSEP — Unofficial Skyrim Special Edition Patch Download ↗
3🖥️ SkyUI — SkyUI (MCM framework) Download ↗
4🧩 Address Library — Address Library for SKSE Plugins Download ↗
5🔧 SSE Engine Fixes — SSE Engine Fixes Download ↗

Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.

🔍 Analysis

  • 👍 1.8% endorsement rate — high engagement, a strong quality signal
  • 🏆 #2 of 156 Bug Fixes mods in this game by downloads

📋 About This Mod

Requires Skyrim Special Edition 1. 7. 99 or greater.

NOT SUPPORTED ON OLDER VERSIONS!!!

A comprehensive bugfixing mod for The Elder Scrolls V: Skyrim - Special Edition. The goal of the Unofficial Skyrim Special Edition Patch (aka USSEP) is to eventually fix every bug with Skyrim Special Edition not officially resolved by the developers to the limits of the Creation Kit and community-developed tools, in one easy-to-install package.

- Hundreds of gameplay, quest, NPC, object, item, text and placement bugs fixed.

- Created by the authors of the Unofficial Oblivion Patch series.

- No unsafe changes (such as deletions of stock objects).

- Designed to be compatible with as many other mods as possible.

For more information (ie the recent changelog, mods that USSEP replaces) see USSEP's threads on the AFK Mods forum here.

The complete changelog is posted here.

If you're experiencing a bug with Skyrim Special Edition, please report the bug to us in as much detail as possible on the USSEP bugtracker. Please use search to ensure that you aren't submitting something that is already there.

Frequently Asked Questions - BUGS

Frequently Asked Questions - About the Project

Mods Made Obsolete by Unofficial Patches

Bug Fixes Recommended in Addition to the Unofficial Patch

Are you using the Anniversary Edition DLC package? If so, you need to get Garthand's Unofficial Skyrim Creation Club Content Patch and install it alongside the USSEP. This will prevent errors induced by these DLCs making changes to the base game records that USSEP then overrides. Please refer all questions about USCCCP to Garthand on his threads.

XBox users can download the USCCCP here.

DO NOT extract the contents of the BSA file into your Data folder as loose files, or let your mod manager perform an equivalent function on the contents of the file. Doing so will cause things to load in the wrong order and break the game. Skyrim is intended to load a BSA alongside it's ESM/ESP file. Circumventing this causes issues which I will not provide support for. If you insist on going against this advice, you will receive no support for the problems you generate as a result of this.

Installation Requirements

Skyrim Special Edition 1. 7. 99 or greater.

After installing the mods, the following general load order needs to be followed:

Dawnguard.esm

Hearthfires.esm

Dragonborn.esm

ccBGSSSE001-Fish.esm

ccQDRSSE001-SurvivalMode.esl

ccBGSSSE037-Curios.esl

ccBGSSSE025-AdvDSGS

🤖 AI-enhanced — based on mod data

USSEP is the definitive bugfix mod for Skyrim Special Edition, fixing hundreds of quest, gameplay, and text issues left unresolved by Bethesda. With 473,922 endorsements and 27 million downloads, it's the most trusted and essential mod for any load order. Updated March 2026, it remains actively maintained.

✨ Key Features

Fixes hundreds of quest, gameplay, and text bugs not addressed by official patches
Comprehensive coverage of all Skyrim Special Edition content
Actively maintained by The Unofficial Patch Project Team
Widely endorsed with 473,922 endorsements and 27 million downloads

📊 Pros & Cons

✅ Pros

  • Community-approved with 473,922 endorsements — the gold standard for bugfixing
  • Actively updated (March 2026) so it stays compatible with current game versions
  • Fixes quest-breaking bugs that can soft-lock your playthrough

⚠️ Cons

  • Requires all official DLCs — no good if you're playing vanilla-only
  • Large mod with many file changes — can conflict with mods that edit the same records
  • Some players dislike that it changes certain 'features' that were arguably intentional
🎯 Is This For You?
For any Skyrim Special Edition player who wants a stable, bug-free experience. Essential for modded playthroughs, but even vanilla players benefit. Skip if you're a purist who wants to keep every original quirk.
📦 Install:Easy· Under 5 minutes

💡 Beginner Tips

  • Install USSEP first in your load order, before other mods, to ensure proper patching.
  • If you use a mod manager like Vortex or Mod Organizer 2, let it handle load order sorting with LOOT.
  • Check the mod's description page for a list of known incompatible mods before adding others.

📊 Mod Details

Game
Skyrim Mods
Author
The Unofficial Patch Project Team
Version
4.3.8a
Downloads
27,047,495
Endorsements
473,922
Category
Bug Fixes
Created
10/26/2016
Updated
3/21/2026

🔧 How to Install Skyrim Mods

Download from Nexus.

📖 Full step-by-step install guide for Skyrim →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Skyrim commands, item IDs, and more.

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