Everything tells me it a server/certificate problem.   All of the current docs like this say 2048bit so I would just double check all the info about the certificate otherwise use the RADIUS authentication https://documentation.meraki.com/MX/Content_Filtering_and_Threat_Protection/Configuring_Active_Directory_with_MX_Security_Appliances#Install_a_Digital_Certificate_on_Each_Domain_Controller ... View more

@GOwens I suggest taking a look at some of the great documentation to help you troubleshoot and isolate your particular setup. Some suggested docs:   https://documentation.meraki.com/MX/Content_Filtering_and_Threat_Protection/Configuring_Active_Directory_with_MX_Security_Appliances   https://documentation.meraki.com/MX/Client_VPN/Client_VPN_Overview ... View more

This document is a great help in understanding vlans, thanks for posting. ... View more

Yes I do plan to pre-configure all of my scopes with reservations, great idea, thanks. ... View more