Inside the main Citra folder (where citra-qt.exe is located), right-click, create a new folder, and name it exactly user .
Once this file is in place, the "gates" open: Citra can finally read the encrypted data, allowing you to boot up your library on your PC.
The citra aes keys.txt file is an essential component for running encrypted 3DS games on the Citra emulator. When using a portable version, placing this file correctly within the user/sysdata/ folder ensures a seamless and mobile emulation experience. Always prioritize safety by dumping your own keys from your 3DS.
Place your file directly inside the sysdata folder.