# ECE 4.0 Unable to initialize Fleet **URL:** \ **Category:** Elastic Observability\ **Tags:** docker\ **Created:** [May 17, 2025, 12:52pm UTC](https://discuss.elastic.co/t/ece-4-0-unable-to-initialize-fleet/378258 "2025-05-17T12:52:33Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![M\_Abdallah](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@M\_Abdallah](https://discuss.elastic.co/u/M_Abdallah)\ **Post date:** [May 17, 2025, 12:52pm UTC](https://discuss.elastic.co/t/ece-4-0-unable-to-initialize-fleet/378258/1 "2025-05-17T12:52:33Z")
i have a newly installed ECE 4.0 for test purpose. when i create a new deployment that contain integration server or add integration sever to an existing deployment it fails to load fleet server and i get Unable to initialize Fleet connection closed by backend. the host in connected to internet via proxy which i suspect is causing the problem. i added the proxy settings in /etc/environment and in docker config. any advice what is the best way to configure proxy settings to get around this issue? ---
**Author:** ![M\_Abdallah](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@M\_Abdallah](https://discuss.elastic.co/u/M_Abdallah)\ **Post date:** [May 19, 2025, 8:46am UTC](https://discuss.elastic.co/t/ece-4-0-unable-to-initialize-fleet/378258/2 "2025-05-19T08:46:17Z")
when creating an new deployment with integration server i creates a docker agent container and i see that its trying to connect to elasticsearch over 127.0.0.1:9200 in container logs ```auto timestamp":"2025-05-19T08:38:48.886Z","message":"failed to fetch elasticsearch version","component":{"binary":"fleet-server","dataset":"elastic_agent.fleet_server","id":"fleet-server-default","type":"fleet-server"},"log":{"source":"fleet-server-default"},"ecs.version":"1.6.0","service.name":"fleet-server","service.type":"fleet-server","error.message":"dial tcp 127.0.0.1:9200: connect: connection refused","ecs.version":"1.6.0"} ```