Yesterday, 6/30/20, I was remoted into my work computer when I was bumped off. When I went back an update was installed (12.0.258820). My printers no longer worked and when I "Activate Teamviewer printing" a messagebox pops up saying "The Teamviewer driver needs to be installed to use remote printing. Do you want to install the printer driver now?". When I click "Continue" nothing happens. My remote printing no longer works. Was something changed with version 12.0.258820 that caused this?
Did you try a computer restart at first?
Usually this solves many strange issues.