Tried restarting, tried ejecting and blowing on the card, checked the titles in question for corruption, but I can't download anything and I still have 19Gb on my 64Gb microSD.
Any hints?
Any hints?

I've had the SD for a year now, but this problem is new. The SD is not fake, it's a PNY 64Gb from Walmart. Not the best quality but certainly not fake and it's certainly held up in downloading titles before.Did you check if the SD card was fake? If not, use something like h2test2 or FakeFlashTest. Also it does not matter where you bought it from or how trustworthy the reseller is; everyone gets fake SD cards.

If you don't verify if its fake or not, how else am I supposed to help you? If you don't believe that's the issue, then what else would it be? At least verify its not fake so we know that's not a cause.I've had the SD for a year now, but this problem is new. The SD is not fake, it's a PNY 64Gb from Walmart. Not the best quality but certainly not fake and it's certainly held up in downloading titles before.
