Hi @hilehoffer
I vaguely remember this does work and was tested for one of my client.
I not too sure though.
Also the following Url suggests the same.
https://documentation.meraki.com/MX/Content_Filtering_and_Threat_Protection/Configuring_Active_Direc...
Excerpts from above thread.
The MX utilizes Microsoft's Windows Management Instrumentation (WMI) service to pull a continuous stream of Logon Security Events from specified Domain Controllers in the Active Directory domain. These security events have critical information that tells the MX which user accounts are logged into which computers. Specifically, the events contain the IP address of the computer and the Windows username of the logged on user.
However is it possible for you to test the AD Integration by changing the mode to "Track by MAC Address" and directly plugging a PC on to the MX.
Regards,
Ajit
AjitsNW@gmail.com
www.ajit.network