Use the following guide to install BG3MM on to your PC. Note, this is not a guide for installing BG3MM on Mac computers or Steam Decks.
Using your game launcher (Steam, GOG, etc), open and run BG3 at least once. Its recommended to at least go through the menu and get to the Character Creation Screen. After this, you can close the game.
Doing this creates a profile and mod folders in the game files that BG3MM needs.
You must have the following installed on your PC. If you are not sure if you have these, its safer to download and install anyway.
Download the latest version of BG3MM from LaughingLeaders GitHub.
The only official download location for BG3MM is LaughingLeaders GitHub. DO NOT TRUST OR USE ANY OTHER SITE CLAMING TO BE A DOWNLOAD SOURCE FOR BG3MM
Note, that the latest release on GitHub may look older, but BG3MM automatically prompts you to update upon launch when a new update is pushed out. There is no reason to redownload from GitHub once you have installed it, unless it was deleted.
Its recommended to not extract BG3MM inside a protected folder.
Extract BG3MM into a folder on your computer. Its recommended to install it either inside the hard drive where your steam in installed or any other location where you want to hold BG3MM. Please note the screens and gifs below show it installed in a dedicated game drive, but you can install it anywhere you choose.
After extracting the files to a new location, you will see a BG3ModManager.exe.
Click and run the BG3ModManager.exe The pathways needed by the exe should automatically be detected upon running the exe file.
If the exe fails to establish the pathways, then you will need to do the following:
If you have correctly followed the guide, your BG3MM should look like the screenshot below. Note, that the profile should say Public.
If you are experiencing any issues with BG3MM after using the guide, consult the follow list of common causes of issues: