Yes, you are not alone in this issue. I first raised the issue with MXs and AD integration being broken after upgrading our dc's to server 2022 in October 2021, 4 months on and every time I check in on the ticket with Meraki, I get the same response you do. There is no resolve date in sight for this issue, and Meraki don't seem to want to fix it or actually work with Microsoft on a solution, although in their defence, neither do any other security vendors with the same problem. I've had to force all our users (8 sites and 8 MX's) to use a default very restrictive filtering policy, which is going down really well with the 6000 end users we have, as you can imagine. Seriously considering selling our MX firewalls and using a smoothwall appliance with agent based attribute reading for auth instead. A step backwards by about 10 years, but at least it works and can be trusted to work consistently. I could say what I'm thinking about the helpful Meraki support teams regarding this matter, but it'll probably just be taken down.
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