CircleCI Server does not yet support orbs natively. However, if you process your config prior to committing, orbs can be translated and used.
The following workaround brings Orbs on CircleCI Server and mimics the flow that occurs in CircleCI’s Cloud Product. In its most simplistic form, this workaround takes a version 2.1 configuration files and translates them into a version 2.0
You can learn more about this workaround here: https://discuss.circleci.com/t/orbs-on-server-solution/36264