I know this is an old thread, but our issues appear to have been resolved by moving to 25.12   We have not made any request for CCX extension disabled as yet.  We have not made any driver updates beyond one machine.   We had a significant number of complaints relating to a single area on one of our buildings.  Logs seems to indicate clients moving between APs constantly at times.     We have been on 25.12 just over 1 week.   This might all be irrelevant to thread, but I thought I would share experience in case anyone sees similar.  All APs are MR42. ... View more

I'll instruct our support department to update the driver, however the reason I thought the issue might be related is because we are seeing similar logs on the AP to information you reported earlier in the thread. @MRCUR wrote: "Updating the Intel driver has not changed anything and both Win 7 & 10 are exhibiting the issue. When this is happening, the AP logs "Client has left AP" numerous times every few seconds. Often times the event log will also show "XX events were not logged". Eventually the client can successfully connect, but the issue reoccurs eventually." ... View more

Hi,    Just picked up on this thread as we are experiencing similar issues in our environment.  It seems to be in a single location but looks like client is trying to switch APs and that causes the issue.   Seeing the following in the event log on an impacted machine (Dell).   The network interface "Intel(R) Dual Band Wireless-AC 8260" has begun resetting. There will be a momentary disruption in network connectivity while the hardware resets. Reason: The network driver requested that it be reset. This network interface has reset 13 time(s) since it was last initialized.   Is this message found for others with this issue?  Our SSID is 802.1X based with machine/user certificates for authentication.   Users reporting random disconnections and short periods of dropped access.     Currently running 25.11 and considering trying 25.12 before opening a support request to go pre-25.9. ... View more