On RHEL and derivatives when attempting to use screen for the first time, an error occurs complaining about permissions on the /var/run/screen not being correct (i.e. 777). To fix this change the following in /usr/lib/tmpfiles.d/screen.conf:

d /run/screen 0775 root screen

to

d /run/screen 0777 root screen

Fun fact: /usr/lib/tmpfiles.d/ is included in the RHEL systemd package and sets up various tmpfile-type files and folders during boot - objects that don't generally exist across reboots but are required for programs to run.