Dockerhub 503/509 Error when pulling a image If you do not log in to the Docker Desktop application and attempt to pull an image via the CLI, you will encounter 503/509 errors. Firewall traffic analysis shows that the request is redirected to a different Docker URL via Cloudflare, which falls under the "Online Storage" category. As per our firewall policies, access to this category is blocked. Redirected URL: docker-images-prod.6aa30f8b08e16409b46e0173d6de2f56.r2.cloudflarestorage.com If you log in to the Docker Desktop application before using the CLI to pull an image, the process works as expected. The request is routed to production.cloudflare.docker.com, which is not redirected by Cloudflare and is not categorized as "Online Storage," allowing the operation to proceed successfully.