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5 Replies 5


Classic Cisco... Love their work around... From the field notices I can't tell if they plan on addressing this issue or not..


 -  The 'small benefit' of this problem is that the time only needs to be set back during the upgrade process (when the access points are upgrading). Afterwards time setting on the controller can be restored. Of course if certain  access points are not always online that may not be possible on short notice (restoring time) , 


Rich R
VIP Advisor VIP Advisor
VIP Advisor

You would think Cisco would have started tracking their certificate expiry dates after Field Notice: FN - 63942 - Wireless Lightweight Access Points and WLAN Controllers Fail to Create CAPWAP Connections Due to Certificate Expiration - Software Upgrade Recommended - Cisco but apparently not ...

TAC recommended codes for AireOS WLC's
Best Practices for AireOS WLC's
TAC recommended codes for 9800 WLC's
Best Practices for 9800 WLC's
Cisco Wireless compatibility matrix
Field Notice: FN-72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Recommended
WARNING - see CSCwd37092 Throughput degraded after upgrading to code - 2800/3800/4800 series
- The fix for CSCwd37092 is now released in and
- For IOS-XE 17.3.6 select controller model, go to IOS XE Software AP Service Pack, select CSCwd40096 17.3.6 APSP2
Field Notice: FN-63942 Lightweight APs and WLCs Fail to Create CAPWAP Connections Due to Certificate
                      Expiration - Software Upgrade Recommended
Field Notice: FN-72524 - During Software Upgrade/Downgrade IOS APs Might Remain in Downloading State
                     After 4 Dec 2022 Due to Certificate Expiration - Fixed in and 17.3.6 APSP5 (APSP_CSCwd83653)
                     Also fixed in (8.5 mainline) and (8.5 IRCM) if you can't upgrade to 8.10
                     Note that and have been deferred (withdrawn) and are effectively unsupported by Cisco
Richard R


what is unclear to me, if pre-download image on the APs is also affected. There is no information provided in the FN.


         - It is , 


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