Please format drive to exfat

I can no longer use my 64gb wirelessly bc this error message keeps popping up. I can back out of the error message and interact with the stick temporarily, then it pops back up. Works fine plugged directly, or in a usb player. Worked fine for over a year. Then uodates. I’ve tried downloading an older version to no avail. Any one have any ideas?

try connecting the drive to a computer backup all your data then reformat the drive using the exFAT file system. then copy back all the data and see if the issue happens again. 

I am also having this issue. I have formatted it multiple times on my Chromebook, which uses the exFat file system, and the error message keeps popping. And I just got the 200GB yesterday.