My Ubuntu VM on VMware workstation was not allowing copy and paste between host and virtual machine. It was also saying that VMware tools was already installed but the copy and paste still was not working. The solution was to just manually install it in command prompt on the Ubuntu virtual machine terminal. I am assuming that you have the two settings “Enable drag and drop” selected and “Enable copy and paste” also selected under guest isolation because that could also be your problem.

Solution:

sudo apt update

This will install the vm tools you need for copy and paste to work

sudo apt install open-vm-tools open-vm-tools-desktop -y

Make sure you reboot after

sudo reboot

After that just log in to Ubuntu and try copy and pasting. It should work now.