Applies to Launchpad Mini, Launchpad MK, Launchpad Pro
Sometimes when you return to your existing Ableton Live sessions, some settings may not be as you left them. Additionally, disconnecting and re-connecting your Launchpad while in the software for troubleshooting purposes can cause issues with your settings. Under the LINK MIDI tab in your Preferences menu you may find that there are duplicate devices showing up. This can create a disruption in the communication between your Launchpad and Ableton.
The following video will help you get these issues cleared up: