I had the same issue with a Meraki MX64 today. I deauthorized and reauthorized the user from the dashboard and my problem was solved. I hope this helps. ... View more

Regarding updating multiple VLANs in one call;    You might want to checkout Action Batches, which have recently been added to the API. They are designed to combine multiple operations into a single request. This is good for adding VLANs, updating switch ports, managing policies, etc. https://developer.cisco.com/meraki/api/#/rest/guides/action-batches     ... View more

We are having clients disassociating too the past week or so. Building with 2 MR 24 APs, same placement for 4 years without issue. 25.11. Very interested in this resolution. Band steering is on, 802.11r is off, dynamic power and channels. ... View more