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Use a tool like or Wii U Key Deriver to verify your keys. A single wrong character (e.g., 0 vs O ) will break the entire file. Cemu stops reading at the first error it encounters. keystxt for cemu better
: The file typically pairs a hex value with a comment identifying the game (e.g., [Key] # Game Title ). Where to Place Your keys.txt File Add a window showing: Use a tool like
The correct format is: [32-character key] # [Optional Game Name or Comment] d3de4...yourkeyhere...56e8 # Super Mario 3D World : The file typically pairs a hex value
0005000010145F00 = D5C5D3E2...
Historically, the keys.txt file contained the generalized Wii U common keys. While still useful, Cemu’s architecture evolved to rely heavily on Title Keys for decrypting specific games.
However, the "best" way to use Cemu today often involves avoiding keys.txt altogether. Modern emulation communities, including EmuDeck , strongly recommend using decrypted formats such as or Loadiine (folder format). These formats are:
