Beats may not be sending data to some distributions of Elasticsearchedit
In this release, Elastic is enabling a licensing change that was broadly communicated earlier in 2021 (Licensing FAQ). This change would imply that 7.13 instances of Beats would fail to connect to 7.10 or earlier open source distributions of Elasticsearch and Kibana.
This licensing change ensures that the Beats modules are sending data to an officially supported versions of Elasticsearch and Kibana where Elastic can attest to the quality and scale of the products.
See the release notes for a complete list of changes, including changes to beta or experimental functionality.