Recently after upgrading my xubuntu version, the full screen was not working, even with open-vm-tools installed. Here is what I did to get the full screen working.
In the top, there will be [Unit] section. Add the following lines in bold text, at the bottom of unit section, as shown in the code below.
[Unit] Description=Service for virtual machines hosted on VMware Documentation=http://open-vm-tools.sourceforge.net/about.php ConditionVirtualization=vmware DefaultDependencies=no Before=cloud-init-local.service Requires=graphical.target After=graphical.target [Service] ExecStart=/usr/bin/vmtoolsd TimeoutStopSec=5 [Install] WantedBy=multi-user.target
Save the file. You may need root permissions to save/edit the file. Enter your sudo password if needed.
Then run the following commands in the terminal. Or restart your guest(ubuntu) system in vmware workstation.
sudo systemctl daemon-reload
sudo service open-vm-tools restart.
This should fix the full screen issue.