Ubuntu – Can’t I write to the external NTFS hard drive, even though the permissions are set

On Ubuntu 16.04 LTS with a 500GB external WD Hard Drive.

After formatting to NTFS, I can not write files using the graphical Files explorer, I get the pop up error seen below:

Pop up error copying files:

I've tried the following:

$ sudo apt-get purge ntfs-3g
$ sudo apt-get install ntfs-3g

This reinstalled the ntfs-3g tools. Great, but I still can't do anything. Here's the out put of ls -al /media, sudo fdisk -l and cat /etc/fstab

$ ls -al /media

drwxrwxrwx   1 kf   kf   4096 May 14 14:09 ntfs

$ sudo fdisk -l 

Disk /dev/sdc: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: FB6876F3-56D8-49CD-B0BB-55B07240A75B

Device      Start       End   Sectors   Size Type
/dev/sdc1      40    409639    409600   200M EFI System
/dev/sdc2  411648 976773134 976361487 465.6G Microsoft basic data

$ cat /etc/fstab

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name  devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
/dev/mapper/ubuntu--vg-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/sda2 during installation
UUID=08fdc860-fb67-4527-bf63-5114d08f16f4 /boot           ext2    defaults        0       2
# /boot/efi was on /dev/sda1 during installation
UUID=8CA6-E334  /boot/efi       vfat    umask=0077      0       1
#/dev/mapper/ubuntu--vg-swap_1 none            swap    sw              0       0
/dev/mapper/cryptswap1 none swap sw 0 0
/dev/sdc2 /media/ntfs ntfs-3g locale=en_US.UTF-8,permissions 0 0

I've gone through all the other posts here on AskUbuntu about this issue, but nothing has helped. Where do I go next?