Windows - jack error "is jack already running?" after first running fine

how do i kill old jack instances on windows? it seems to run fine after one reboot then refuses to run until a total system restart

Hi @pumuferna - Welcome to the JackTrip Forum. Are you asking about JackTrip or JACK Audio or both? They are two different programs. If you would like to ask about Jack Audio, they have a place on Github where you can raise issues - Issues · jackaudio/jack2 · GitHub

Lots of JackTrippers, including me, still use JACK Audio because it used to be required in order to run JackTrip. If you would like to email me at we can figure out what’s going on and I will help you troubleshoot JACK or JackTrip or both!

Thank you!