Setting up touch ID - "unable to complete Touch ID setup" I've had some problems recently with my Macbook on OSX (newest Macbook version with touch bar). Where my Touch ID used to work, suddenly, one day two things happened:


My computer have started to start much slower (2-3minutes+) 
Touch Id does not work before


I've tried to go into Touch Id under "System Preferances". I've removed the existing fingerprint. When I click "Add a fingerprint", enter the password, it goes directly to "Failed - Unable to complete Touch ID setup".
Do you have synmatec or any antivirus installed? If so, uninstall them and restart your system, then try again.