https://community.extremenetworks.com/t5/extremewireless-identifi/ap-shows-serial-0000000000000001/m-p/42114#M3140 You will need to contact GTAC, if the serial is still showing this error it should be replaced also. Tue, 04 Aug 2015 18:52:00 GMT Doug 2015-08-04T18:52:00Z https://community.extremenetworks.com/t5/extremewireless-identifi/ap-shows-serial-0000000000000001/m-p/42113#M3139 We are using two V2110 (09.15.08.0006) controllers with round about 100 APs. One AP3710i Internal was broken because of a water damage. We exchanged it with a new one but this one registered with the serial #0000000000000001. I set it to factory defaults but nothing changed. <BR /> <BR /> Finally it is working but this behaviour is very strange. Do you have any ideas? Is it possible to set the serial number manually?<BR /> <BR /> 08.04.2015 12:43 Critical 28 sec in cycle 114: Radio Manager (1) not initialized, cannot complete VNS change request 08.04.2015 12:43 Critical 28 sec in cycle 114: Radio Manager (1) not initialized, cannot complete VNS change request 08.04.2015 12:43 Major 8 sec in cycle 114: Failed to generate AP cert. Serial number not set 08.04.2015 12:43 Major 8 sec in cycle 114: Deleting not matching AP default certificate and private key. 08.04.2015 12:43 Minor 6 sec in cycle 114: Alarm log cleared. Logging revision changed 08.04.2015 12:41 Critical 34 sec in cycle 2: Radio Manager (1) not initialized, cannot complete VNS change request 08.04.2015 12:41 Critical 34 sec in cycle 2: Radio Manager (1) not initialized, cannot complete VNS change request 08.04.2015 12:41 Major 8 sec in cycle 2: Failed to generate AP cert. Serial number not set 08.04.2015 12:41 Major 8 sec in cycle 2: Deleting not matching AP default certificate and private key. 08.04.2015 12:41 Critical 26 sec in cycle 1: AccessPoint Rebooting due to: Configuration Change 08.04.2015 12:41 Major 8 sec in cycle 1: Failed to generate AP cert. Serial number not set 08.04.2015 12:41 Major 8 sec in cycle 1: Deleting not matching AP default certificate and private key. Tue, 04 Aug 2015 18:49:00 GMT https://community.extremenetworks.com/t5/extremewireless-identifi/ap-shows-serial-0000000000000001/m-p/42113#M3139 jaegerschnitzel 2015-08-04T18:49:00Z https://community.extremenetworks.com/t5/extremewireless-identifi/ap-shows-serial-0000000000000001/m-p/42114#M3140 You will need to contact GTAC, if the serial is still showing this error it should be replaced also. Tue, 04 Aug 2015 18:52:00 GMT https://community.extremenetworks.com/t5/extremewireless-identifi/ap-shows-serial-0000000000000001/m-p/42114#M3140 Doug 2015-08-04T18:52:00Z https://community.extremenetworks.com/t5/extremewireless-identifi/ap-shows-serial-0000000000000001/m-p/42115#M3141 Reference: <A href="https://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-displays-a-serial-number-0000000000000001-on-the-wireless-controller" target="_blank" rel="nofollow noreferrer noopener">https://gtacknowledge.extremenetworks.com/articles/Solution/Access-Point-displays-a-serial-number-00...</A> Tue, 04 Aug 2015 18:57:00 GMT https://community.extremenetworks.com/t5/extremewireless-identifi/ap-shows-serial-0000000000000001/m-p/42115#M3141 Doug 2015-08-04T18:57:00Z