Hi @marce, thanks for the reply and it was the cert issue so follow this link https://www.cisco.com/c/en/us/support/docs/wireless/aironet-700-series-access-points/218447-ios-ap-image-download-fails-due-to-expir.htmlSo only used step 3 at the  "Workar...

Thanks, All shows Staedy Green and and connected different cisco switches (so every switch first 4 port configured for APs). So 2 working one same switch other different switch. And also my understanding at the same 1.switch 4 APs connected 2 works/j...

Hi Konstantin,Thank you so much for this and I can connect Via web and also via Putty on to WLC 2504. How i can check certificate. Ps: I m not IT pro. thank you so much on advance

Hi @marce,thank you so much for reply and Its all POE and i have done a few off them but nothing change. But firstly only 3 was down (after replace patchpanel keystone jack) then i loging web gui on to WLC i see time was 10hr different then i correct...