ran into an odd situation yesterday installing SHIFT4. there was a firewall blocking shift4 from connecting for authorization. i had turned off the windows firewall, pc cillin firewall, and even the router firewall. was still getting blocked though on all 6 workstations. at the suggestion of the tech from shift4, we turned off the windows firewall service, and it immediatley started working. did this on all 6 workstations, was the same for all. something with the service running, even though windows firewall was set to off, was blocking

for future firewall issues, try to keep this in mind. turn off the windows firewall service, and also, set it to be disabled, that way the next time they restart, it does not turn back on