Hello, I do not know if you have managed to find the cause of this problem, but I have the same situation. In a school center, at the moment the staff begin to connect through Microsoft Teams, the network becomes unstable, losing internet connection, specifically through dns, and errors are seen in the meraki dashboard, indicating Disabled Switch (Bad Dns). The firewall in front of the MS250 is a Forti which had policies with security profiles of web filtering, ips, etc. By removing these security profiles, traffic flows smoothly and errors on the Meraki dashboard are eliminated. Even though the DNS filter profile was not enabled. We are now in the process of detecting which of these profiles may be causing the problem. Greetings.
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