How to Install Tamriel Rebuilt

Welcome to Tamriel Rebuilt! This installation guide will walk you through the installation process and also covers some common troubleshooting issues.

Requirements and Pre-Installation Setup

To properly use Tamriel Rebuilt (TR), we require you to have the english-language version of The Elder Scrolls III: Morrowind installed, along with the Tribunal and Bloodmoon expansions, and the patch version 1.6.1820.

The Game of the Year (GotY) editions available on GOG, Steam,, and the Anthology DVD set already include patch 1.6.1820.

If you have an older version of the GotY edition, which includes Tribunal and Bloodmoon but not the 1.6 patch, or even all three disks separately, you must download and install the patch from the Bethesda Softworks website [Bethsoft]. If you’re not sure if you patched it, load the game up to the main menu and check the lower left corner. It should say 1.6.1820. If you have installed MCP (see below), this will read MCP 2.1 (or whichever version you have) instead. This is fine, as MCP also requires patch 1.6.1820.

We require using either Morrowind Code Patch [Nexus Mods] (for the map expansion option and engine bugfixes) or OpenMW [OpenMW]. If using Morrowind Code Patch, we further recommend Morrowind Graphics Extender [Nexus Mods].
The Xbox Game Pass version has been reported not to work for installation in the normal engine.

A fresh installation of Morrowind, with MCP and MGEXE

If you have a previous version of TR installed, please remove it. We strongly recommend starting a new game if you update to version 23.10 (Andaram) from any previous version. If you are having issues since updating to a new version, see the troubleshooting section below.

Downloading Tamriel_Data and Tamriel Rebuilt

Tamriel Rebuilt is downloaded in two parts: the datafiles and the masterfiles.

The datafiles are the models, textures, and other artwork that you interact with in-game. They are required. We offer both HD and vanilla-equivalent datafiles. Download and use only one. You can find out their download locations »here«.
The masterfiles are what contain the actual landscape, towns, people, and quests of Tamriel Rebuilt. You can find out their download locations »here«.

You must download both the masterfiles and datafiles to play Tamriel Rebuilt.

There is also an optional addon music pack and an original soundtrack, which is available from the Main Release page on our site.

Both the datafiles and masterfiles, downloaded and ready to install (this shows old version numbers; always use the latest versions available).

Unpacking and Installation

Now that you have both the datafiles and masterfiles, you can either use a mod manager to install the mods, or do it manually. This tutorial will only cover the manual installation process.
Please note that the Vortex mod manager will not install the files correctly, we strongly recommend against using it to install Tamriel Rebuilt. If you prefer using it, you should follow the instructions to install TR manually anyway and use it for other mods only.

First, unpack the datafiles to a folder of your choosing. 7zip is a good program to use for this. They are organised in the form of a BAIN Installer [TES Alliance], intended to greatly decrease installation efforts with tools like Wrye Mash and MO2 and to offer a logical division between various options for all users. To install the datafiles correctly, you must move all the files and folders from inside the 00 Data Files folder of the extracted archive, into your Morrowind Data Files folder. If you have done that correctly, you should now see Tamriel_Data.esm, TR_Data.bsa, PC_Data.bsa, and Sky_Data.bsa in the Data Files folder.

Next, unpack the masterfiles. As with the datafiles, these are organised as a BAIN installer.
You must at the very least take out the files from the 00 Core folder and put them into the Morrowind Data Files folder. Everything else is optional (and, if the folders start with the same number, mutually exclusive). Please check the TR_Readme.txt file, which is located in the Docs folder in 00 Core, about our optional masterfiles.
For this tutorial, we will install files from 00 Core, 01 Faction Integration, and 02 Siege at Firemoth Compatibility Patch

If you are using the addon music pack, extract it into your Data Files folder.
If you are using the original soundtrack, read its installation instructions and requirements.

[Warning, the below screenshots are outdated, and do not show the new BAIN installer structure. You should instead see numbered folders, for example named 00 Core or 00 Data Files, directly in the downloaded archives.]

Extracting the masterfiles into the Data Files folder with WinRAR

Extracting the Data Files into the Morrowind Folder with WinRAR

Once your data and master files are extracted, your Data Files folder should look like this.
Depending, you might have other mods in here also, or not have TR_Travels in your version of TR.

Registering Your BSAs

Next, we register the BSAs. This is the most important step; it is required that you register your BSA files. This is necessary even if you use mod managers like NMM, Wrye Mash, or Mod Organizer 2, but may require extra steps found in our FAQ.

If you are a Morrowind user (or an OpenMW user who wants to be extra careful) open up your Morrowind.ini, which is found in the Morrowind folder.

(If you do not see Morrowind.ini, run MorrowindLauncher.exe and open up the options menu. This should force the game to generate a new ini.) Backup your ini before you make any changes to it. Down the bottom of the ini file you will see a list of archives. This list of archives will not automatically update! Add in TR_Data.bsa, PC_Data.bsa and Sky_Data.bsa if it they are not already listed by copying and pasting the section below.

Archive 2=TR_Data.bsa
Archive 3=PC_Data.bsa
Archive 4=Sky_Data.bsa

Save the file and exit it.

Your Morrowind.ini should be in your Morrowind folder. Scroll down to the bottom to see the archive list.

Make sure you have TR_Data, PC_Data, and Sky_Data listed. They should be after BM & TB.
Also, make sure your Game Files list is at the VERY bottom of the ini file. Otherwise weird issues can happen.
Cut and paste it to move it to the very bottom if needed.

If you are an OpenMW user, this will be easier. Just use the Archive Files tab in the OpenMW launcher (on OpenMW versions 0.48 or later) to tick the three needed new BSA files:

The Archive Files tab should show three new BSA files added in addition to the vanilla ones. You need to tick them all.

(Alternatively, if you made the changes to Morrowind.ini detailed in above, you can reimport your Morrowind.ini via the OpenMW Wizard and you should be set. Morrowind.ini is only used to populate OpenMW's actual configuration file, openmw.cfg, which is found in your user's Documents\OpenMW folder. If you prefer to edit the openmw.cfg text file directly, please see How To Install and Use Mods [Read the Docs].)

If, for some reason, your BSA registration does not seem to do anything (causing Actor Animation Class errors, or giving you yellow exclamation marks during character creation) or you are a Mod Organizer 2 user, please check our FAQ.

Updating The Load Order

Once the BSAs are registered, open up your load order in the Morrowind Launcher, OpenMW launcher, or a mod manager. Check your load order. Tamriel Rebuilt should be loaded just after the vanilla masterfiles. The load order should read Tamriel_Data, TR_Mainland, then TR_Factions,  and TR_Firemoth_Vanilla_patch if you have them. This load order should show up by default. If you have other mods, load them all after all TR plugins. Mods like Project Tamriel should be loaded just after TR.

Proper load order, as viewed in the Morrowind Launcher.

Proper load order, as viewed from Nexus Mod Manager.

Make sure you tick the box next to Tamriel_Data.esm and TR_Mainland.esm. These are required.

The optional plugin, TR_Factions.esp, is planned to integrate Mainland's faction questlines with the base game. Currently, it changes the dialogue of its faction members to reflect our content, as well as requiring more quests to advance in most factions. Finally, it will expand all of the Hortator and Nerevarine quests into the mainland; currently, it only makes the Telvanni quest include mainland councilors and the Nerevarine quest include mainland Ashlander clans.

The second optional plugin, TR_Firemoth_Vanilla_patch.esp, is needed if you use the official Bethesda mod Siege at Firemoth. The patch corrects a land shape conflict between Tamriel Rebuilt and this mod. Make sure you load the patch after Siege at Firemoth.esp.

And now, your copy of Tamriel Rebuilt should be ready to play!


Q: I swear I registered my BSAs. But every time I do it, I go in-game and get error messages. When I check back on my ini, the changes I made magically disappeared! What happened?
A: Make sure your Game Files list is at the very bottom of the ini file. For some reason, the ini occasionally puts the file list not at the bottom. Then, when the game or mod managers edit this file list, it accidentially overwrites other stuff in the ini. This can delete all kinds of stuff, like the archive list, weather conditions, or even level up dialogue.

Q: Tamriel_Data worked fine before I updated it to version 10.0. Why do I now see error messages and exclamation marks?
A: You may have been using Tamriel_Data version 8.0 or older, which used to contain only two BSA files; now, it contains three. Make sure you have de-registered the old PT_Data.bsa and registered the new PC_Data.bsa and Sky_Data.bsa files.

Q: Why does Tamriel Rebuilt keep throwing errors or crashing on start up if updating from a previous version to version 23.10? Or, why do I have exclamation marks, deprecation signs, etc, in some parts of the mainland?
A: (See also previous question.) You may be still loading our old, deprecated plugins TR_Travels.esp (or any version thereof) and/or TR_Preview.esp from a pre-2023 version of TR that you had installed. You should untick and delete these plugins from your Data Files folder. We have integrated the former plugin into TR_Mainland.esm and removed the latter one altogether. Instead, if you wish to see uninished areas of Tamriel Rebuilt, please use our in-development Release Files instead. You can ask for advice on our Discord server.

Q: My map is glitching; every time I try to scroll over to TR, it won’t let me. Why can’t I see all of TR?
A: Morrowind’s native map can only scroll out so far. This glitch actually happens with the Bloodmoon expansion. To fix it, use Morrowind Code Patch (see above) and use the map expansion option.

Q: I had a version of TR previous to 16.09. When I switched to a new version, my saved games/mods went haywire. What happened?
A: With the 16.09 release, TR changed its data files over to Tamriel_Data. This changed both the name of the BSA/ESM and the CS IDs of every single object we use. Unfortunately, this caused all saved games and mods that rely on previous versions to be totally incompatible with newer versions. But don’t lose hope! To fix this issue, there is a patcher available to update references to old asset IDs to point to the correct new asset IDs. You may still need to update your saved game/mod with Wrye Mash/Bash to correctly rely on Tamriel_Data.esm instead of TR_Data.esm. Also, if your mod relied on TR_Preview… don’t! TR_Preview changes with each release and may break mods. Stick to the content of TR_Mainland for modding.

The patcher is included in Tamriel_Data when you download it.

General Notes

  • Due to its age, Morrowind occasionally has errors related to permissions. To fix them, install Morrowind someplace other than the Program Files folder and run it as an administrator.
  • Tamriel Rebuilt is fully compatible with OpenMW. Any differences in the installation are outlined above. Check the OpenMW site for details.
  • If you notice something going wrong with your game, ask around on our Discord server or post on our forums. The FAQ is also a good place to check. Finally, we have a bugtracker. Please specify what you did, and also please tell us if you’re using default Morrowind or OpenMW!