Hi J-One,
Dear member of SanDisk Community, welcome.
Congratulations friend, also:
- It’s more simpler, if you need FAT32 (you can have files size up to 4 Gb) on the micro SDXC 64GB, utilize
the tool (portable app, free): USB Flash Fat32 Format 1.01
- Try your microSDXC 64GB, in a laptop directly to its port-card (not USB card-reader).
In PC, use only USB card-reader of brand, of high quality (SanDisk, Kingston, Lexar, Samsung, etc).
Because most and the cheap, are junk, not have the chips, check it yourself.
Take a look:
Enjoy!
Regards, Alfred. (Google translated)