@Hilbrand Disabled the deco's and turned on the wifi of my router again. Immediately connetion with my Hue bridge via wifi.

@Hilbrand Tried a static ip adress now also, this makes also no difference.

@David-TP thanks for the help. yes the deco's are in ap mode. yes connected the hue bridge also to lan switch, this does not make a difference. did not try static ip address yes yet.

@Hilbrand

Cannot reach my Phillips Hue bridge (LAN) via Deco Mesh (WIFI). WHile I can reach other LAN equipment via wifi. Also when I connect my HUE bridge to the port n the main deco I cannot get access to...