virtualbox.org

Since it's not working correctly in Ubuntu 16.04 and I must uninstall to try installing again it would be really great to see that listed in the How To's or the FAQ. It's omission is frustrating.

Thanks

The problem with that is there are so many ways you might have installed it and even from other sources than virtualbox.org
Normally you can use the host OS package manager if you can not find the uninstall.sh in the top level folder of the program.