Comment 17 for bug 979477

Launchpad bug #1607535 is fixed in the upstream ttf-mscorefonts-installer (v3.6) but at the time of this answer it hasn't been merged into Ubuntu's repositories.

Check on Launchpad whether version 3.6 was made available for your Ubuntu release. If that's the case, just update the repository information and your packages:

sudo apt update
sudo apt upgrade -f ttf-mscorefonts-installer
This tells Apt to
install or upgrade ttf-mscorefonts-installer to the newest available version,
upgrade all packages that can be replaced trivially by a new version, and
try to fix all inconsistent packages in the process (-f).
If version 3.6 is not available for your Ubuntu release you can download the Debian package and install it with Software Center or on the command-line