Fatal Error Occurred When Running Fusee – 4 Solutions Will 100% Fix It!!

We have come with 4 solutions that can 100% fix the fatal error occurred when running fusee. So if you are looking for how to fix it – check this guide and share with someone who need it!

Well, the evolution of handheld game systems has been remarkable. These days, we have access to some extremely impressive handheld gaming systems, such as the Nintendo Switch, that are equipped with a significant amount of power, not to mention an extensive selection of games.

Modifying the handheld consoles of the next generation, however, is not an easy task, and there are obstacles at every step of the process. We’ll take a look at the error that says “a fatal error occurred when launching Fusee” and provide you with four potential remedies to the issue in the following paragraphs.

Fatal Error Occurred When Running Fusee

Check the SD card you have

To begin, examine your SD card to guarantee that it has been formatted in the appropriate file format. Even though several emulators support a variety of file formats, it is best to stick with FAT32 or NFTS for the most consistent results. This problem may also be caused by corrupt SD cards; therefore, after formatting your SD card, you should test it with another device to confirm that everything is in working order.

Please bring Atmosphere and Hekate up to date

After that, check to see that Atmosphere and Hekate both have the most recent stable build versions installed in order to guarantee that they are compatible with the most recent Switch firmware. Make sure that fusee.bin is up to date, and if there is a change in the software versions, you will need to update the configuration files as well.

Also, check to see that all of the files necessary for the programmes to continue working after the update are present on the storage drive of your Switch (or memory card). The update will frequently delete the configuration files that are necessary for the emulator to operate properly.

Fusee files should be replaced

You might also try changing the fusee-primary.bin file that is now in use with the fusee.bin file, and the fusee-secondary.bin file with the package file. This would be in addition to replacing your configuration files. It is expected that this will fix the error and get the emulator setup back in working order.

Disable Auto RCM

There is a function in Hekate known as auto RCM that, in the event that your custom operating system is unable to boot, will cause your console to automatically boot into its default operating system. However, there are times when auto RCM can bypass the modified operating system and load the original OS instead. If you want to see if turning off auto RCM in the Hekate settings makes a difference, try doing so.


So guys these are the 4 best solutions to fix Fatal Error Occurred When Running Fusee. If you know any other better way, then you tell us in the comments and please don’t forget to share it with others on social media. We also cover others error code on techprimeworld.com so please check them too!