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To prevent unauthorized copying, game data on the Wii U disc is encrypted. Cemu cannot read this scrambled data directly. This is where a two-key encryption system comes into play.

Make sure keys.txt is located in the root directory of Cemu, right alongside Cemu.exe .

Some popular online title key databases include:

Each entry must follow one of these exact formats, depending on whether it is a system key or a game key:

: Developers often host pre-formatted keys for major titles on Gist for easy copying into your local file.

While obtaining and using title keys is relatively straightforward, there are some common issues that users may encounter:

: Inside the main Cemu folder where the Cemu.exe is located. AppData (Windows) : Often found at %AppData%\Cemu\ .

Once you've obtained the title keys, it's time to use them in Cemu. Here's a step-by-step guide: