Hello here is the configutaion of my balancer Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED ProxyHCExpr ok2 {%{REQUEST_STATUS} =~ /^[2]/} <Proxy balancer://trackingwsbalancer> BalancerMember wss://10.10.10.131:8443 route=1 hcmethod=GET hcexpr=ok2 hcuri=/trackingproxy_advanced/actuator BalancerMember wss://10.10.10.132:8443 route=2 hcmethod=GET hcexpr=ok2 hcuri=/trackingproxy_advanced/actuator ProxySet stickysession=ROUTEID ProxySet lbmethod=bybusyness </Proxy> It turns out that mod_proxy_hcheck create a request by merging the balancer member and the hcuri : wss://10.10.10.131:8443/trackingproxy_advanced/actuator and it failed the right hucui should use the http scheme and then resquest over this uri : https://10.10.10.131:8443/trackingproxy_advanced/actuator best regards