exFAT file system is supported by all the latest versions of Windows and macOS operating systems. Ubuntu, like most of the other major Linux distributions, doesn’t provide support for the proprietary exFAT filesystem by default.

Does Ubuntu 20.04 support exFAT?

Ubuntu and many other Linux distributions don’t provide the proprietary exFAT file support by default. This is the reason why you see the mount error with exFAT files.

What OS can read exFAT?

exFAT is compatible with more devices than NTFS, making it the system to use when copying/sharing large files between OSes. The Mac OS X has only read-only support for NTFS, but offers full read/write support for exFAT. exFAT drives can also be accessed on Linux after installing the appropriate exFAT drivers.