Just wanted to chime in on this issue we're facing as well. We have 10 Meraki AP's, 5x MR45 and 5x MR46. All running firmware version 28.6.1. We never had these issues on earlier firmware versions.   So far the MR46's are not showing the issue, only the MR45's. One slight difference between them is that the MR46's are connected to non-Meraki POE switch (Netgear to be precise). Not sure if that could have any effect but I thought I'd mention it. The MR45's are all connected to the same  MS225-48LP switch on firmware 14.33.   So far the issue has only happened at night, no idea if that is just dumb luck or also has something to do with the root cause. Timeframe varies a bit but usually they go offline around 1:00 AM and come back online around 9:00 AM (this is UTC+1/CET timezone). ... View more