Before running makes sure you have

• Graphics drivers updated to the latest version available
• A x64 bit OS [ClsssicUO does not support x86]
• An Ultima Online installation. ClassicUO does not provide any game asset

Download

• Download the launcher from https://www.classicuo.eu/

Windows

Prerequisites

• Install latest VC++ redist from here: https://aka.ms/vs/16/release/vc_redist.x64.exe

Installation

• Extract the downloaded ClassicUOLauncher-win-x64-release.zip file into a folder.
• Open the folder and run ClassicUOLauncher.exe.

If you are having problems, the launcher may need to gain access. Run it as administrator or move the whole launcher folder to another location like Documents or Desktop.