Several months ago we started having severe wifi connectivity problems that affected customers using HP ProBooks (windows 10) at sites with either a combination of mostly MR42s and a couple of MR44s or a site with mostly MR44s and a couple of MR32s filling in dead spots. We are not certain that the mix of APs is a problem but there is a lot of correlation; we have had far fewer problems at one of the customers alternate sites that only has MR42s. AP firmware has been kept up to date. I'd have to dig to find out where they started and when they were updated over the months. Running HP latest drivers made no difference. Rolling back to a 2021 Lenovo driver on the HPs actually did reduce the problems substantially (and re-updating to current HP brought them back with a vengeance). The customer sees horrible performance. The timeline in the dashboard shows it connecting and disconnecting every few seconds, sometimes switching from 2.4 to 5ghz and back again, often roaming to different APs, often distant ones with horrible s/n ratio, staying there for a few seconds, then roaming back. Sometimes they will maintain one connection for several hours, then start this mess again for a few minutes to over an hour, even if the laptop is not actually moved. In our office with two MR32s and an MR44 we were able to duplicate this. Using an SSID with tags so we could run it just on the central MR44 or the front/back MR32s we confirmed that the problem occurred far more often when we walked the office with the SSID on all three APs, but still happened occasionally when roaming the two MR32s, and didn't happen with just the MR44 as long as we ran the 2021 Lenovo driver. When it occurred, we would sometimes get the insane timelines, and when we didn't we could still see the event log entries showing most of the connect/disconnects (there is or was a dashboard problem that Meraki is aware of when you just don't get timeline entries, or they are delayed showing up). Now we have a Dell at one of the same sites, with a controller ID'd as a Windows 10 box with CHONGQING FUGUI controller. It does not move when there, but is now doing the same thing. It keeps jittering, disconnect/reconnect, roaming to distant APs then failing back, but this one adds a new wrinkle; we are seeing many repeating Code 2 multiple invalid authentication (this is not them messing up the SSID passphrase) Code 1 unspecified failure Code 53 multiple invalid PMKID status and code 30 multiple Refused Temporarily We were on the dashboard checking when the last bit of this was happening. The two nearest APs (MR42s) were not heavily loaded and no other clients on them were having issues. This one PC roamed to both and also 4 other APs further away during its tantrums. The HP/Realtek fails got the code 1 and 2, and rarely code 30 events. We never saw a code 53. This one machine generated 1300 connection attempts and over 800 fails in a few hours. It had an hour of problems, then ran fine for several hours, then another 45 minutes of problems before the user gave up. That Dell is not a machine we have access to or control over (nor does our customer, we have to go through the end user); we have asked them to try to get up to date drivers and such installed. I don't recall problems like this happening prior to about 8-10 months ago (Realtek) but the customers were much quieter then as many still weren't going in to the office sites. Any thoughts?
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