@franco2018the MFA on premise doesn't need the NPS Service, you only have to active RADUIS Authentication, in client add the public IP of your Service in cisco meraki (there is a big list but I you can capture the packets in your firewall your Will be notice that the request ever arrive from the same IP) In the second tab of radius authentication select Windows domain (the first option) with that your RADIUS Will work without NPS.
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