File To Copy File

[anewbie2]

Recently I've been having a problem with moving a file to a flash drive.

The file can be moved within the phone, but when to copy the file into the flash drive it gives me a message saying "failed to copy file"

I have a Note 8 and I would like to know is there a way to fix this problem, or another way to transfer the file to the flash drive?

 

[B. Diddy]

Are you able to transfer other files to or from the flash drive? How are you connecting the drive to the phone?