Hello Maksim,seems there is console opened on that server.like the one you open when you go to my computer ->> right click ->> manage.or when you go to run and type MMC.- make sure that you are not opening any such session , and try the install again...

Hello Pavel,you can use root , non root bridge setup.and on any of them you can add wireless clients supportby command , station role root bridge wireless-clienthere is some configuration commands i used previously on root-nonroot setupROOTAP(config)...

Hello Huw,as i see in your confirguartion.native VLAN is 121. so you have to correct following in your AP configuration1) interface Dot11Radio0.121 encapsulation dot1Q 121 native bridge-group 121         ->>>>>>>>>>>>>>>> change this to brige-group 1...