We are continuing progress with work to make the final change to stop supporting TLS 1.1, TLS 1.0 and plaintext access until 16:00 pm UTC in us-west-1, us-west-2, us-east-1 and eu-west-1.
Customers using clients that were still sending data to their deployments on Elasticsearch Service using TLS 1.0/1.1 or plain-text HTTP, have received a series of emails and notifications on this topic.
To ensure continued service, you must update any client that is using TLS 1.1, TLS 1.0 or plaintext communication. Please read the blog post
that has details on the client versions that support TLS 1.2.