This is a more permanent solution. While FAT32 has file size limitations (4GB per file), it's significantly more stable and less prone to the type of corruption that affects exFAT on the Switch.
Why this happens
The error message "" generally occurs when an emulator or console tries to launch a file that is not the base game, but rather an update or DLC. Error Analysis the nsp file is missing a programtype nca upd
Use the option to rebuild the container. NSC_Builder will strip out corrupted metadata tags and rewrite a clean, standard header structure that your console's installer can easily read. Prevention Tips for Future Installs This is a more permanent solution