To install Adobe Reader (9.5.5) follow these instructions , courtesy of LinuxConfig.org . https://linuxconfig.org/how-to-install-adobe-acrobat-reader-on-ubuntu-18-04-bionic-beaver-linux Adding issues I ran into post-install. Possible issues post-install, when running app in terminal. issues below did not stop 'acroread' from running, nor hinder its performance. if you execute 'acroread' in terminal you'll see issues like the below with ease. Otherwise, if using the shortcut, likely created under the 'Office' category, then you may need to refer to system logs to identify any errors. Murrine (or other theme) missing : sudo apt install --reinstall gtk2-engines-murrine:i386 ( even on 64-bit systems ) OR sudo apt install gtk2-engines-murrine:i386 ( even on 64-bit systems ) For these two errors install the modules listed below : Gtk-Message: Failed to load module "gail" Gtk-Message: Failed to load module "atk-brid...