Hello, Is there a way to activate Coherence mode for Ubuntu 16.04.3 (guest) on macOS 10.12.6 (host)? When I click the red Parallels icon in the menu bar, then go to View, Enter Coherence is greyed out. I noticed a few times when logging into Ubuntu, there was a notification message about Parallels tools (though I don't remember exactly what it said, and it seems to have temporarily disappeared now). I also notice when first logging in, that the app icons for 2 Parallels programs are visible (though 1 has a question mark). I assume the first step is to reinstall the tools. How can I reinstall the tools on my Ubuntu VM? Thanks!