There are sadly too many fake 64GB cards out there now that fail just like you reported. XP also can't format this in many PCs. Try adding more details about host and cards.
64GB SD card doesn’t work! It reports “please insert a disk into removable disk” when I try to open it in My Computer, and it can’t be formatted either and it reports error “Windows couldn’t …format”!!
I’ve searched this question online a whole day and tried all possible solutions found online, such as format it in Disk Management or with Command line. None of them works. I post question here to seek help from you. Are there other solutions to fix it? Thanks!

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