Temporarily disable your antivirus software and firewall, then relaunch the emulator to see if the error persists. However, they can sometimes interfere with the download process of the Yuzu Emulator and cause errors like the 'NCA Header Key Could Not Be Found' error. Disable antivirus and firewall on your Windows PC: Antivirus software and firewalls are essential for protecting your computer from threats. By trying a different ROM folder, you can determine whether the issue is with the emulator or the specific game files. Sometimes, the error may be specific to a particular game or ROM. Try loading a ROM folder to ensure the error is fixed: If restarting the emulator didn't solve the problem, try loading a ROM folder to verify if the error is still occurring. Close the emulator completely and relaunch it to see if the error persists. Restarting the Yuzu Emulator can help resolve various issues, including the 'NCA Header Key Could Not Be Found' error. Restart the Yuzu Emulator: Sometimes, the simplest solution is the most effective.
