Thanks @ESMichal, according to this thread 29.4.1 Radius Issues some clients unable to connect to MR-53 AP's - The Meraki Community a workaround is to disable 802.11w or downgrade to an earlier firmware. This thread also mentions that the issue is known to Meraki and they are working on a fix (no ETA yet). For now, we'll just stick to the 28.7 firmware.  ... View more

Hi ESMichal,   May I ask what brand of laptops you use as we only saw this issue on our HP laptops. Thanks! ... View more

Hi everyone, after upgrading the MRs to 29.4.1, we had the same issue (disconnects due to excess frame loss) rolled back to 28.7.1 and everything is fine again. We opened a call with Meraki support, but the engineer wasn't aware of this issue. We mostly use Dell computers, but we also have a couple of HP laptops. Since only the HP users complained, it could be this issue only happens with certain types of wifi cards.  ... View more