I thought the anonymous identity field might be the cause (and who knows? Maybe still is...) From my experience - A couple years ago, it didn't seem to matter what went in there.  Some time later, it was only authenticating when people copied their username to the anonymous id field.  As of recent, I've tried:   blank/empty left the default "anonymous" mirrored the username (i.e., anon id = username) full AD user (domain\username) UPN (username@domain.suffix)   No success.  Timing-wise from when the problem started, and some testing on other devices still on Android 14 (which connect fine), it 'seems' to be related to A15.  Whether it has something to do with something changing in how it handles the Anon Id field - since that has affected things before - or something else altogether... Still stumped. ... View more

Based on what I've learned so far, if it we are talking about the same issue, it does seem to be related to an Android 15 update that happened back in Dec.  Many ppl reporting rolling back/flashing to A14 gets it working again on these devices (which isn't an ideal option, as no one really wants to spend half hour setting up their phone again after a reset).  Pretty much likely waiting for a fix in the next Android security patch/update. ... View more

Did you ever figure this out?  I've been running into the same issue.  Some phones won't connect (Auth Failure).  Even logs on the NPS say the same regarding the auth failure.  If I test the same creds on the Meraki dashboard for that SSID, the tests pass and it authenticates against all APs.   Bit stumped, as I know the creds are correct - especially given it passes on the test in the dashboard.  Just seems to be a handful of phones (i.e., Pixel 9) that throw the auth failure.   Edit:  I found a Reddit sub mentioning this issue, and it seems it's more than likely an Android 15 issue (https://www.reddit.com/r/GooglePixel/comments/1hgx56r/wifi_connection_issue_saved_disabled/) ... View more