# \[ElasticSearch 7.6.2\] Client requested protocol TLSv1 is not enabled or supported in server context

**URL:** <https://discuss.elastic.co/t/elasticsearch-7-6-2-client-requested-protocol-tlsv1-is-not-enabled-or-supported-in-server-context/230547>\
**Category:** Elasticsearch\
**Created:** [April 30, 2020, 12:28pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-2-client-requested-protocol-tlsv1-is-not-enabled-or-supported-in-server-context/230547 "2020-04-30T12:28:18Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ahmed\_Abdulaleem](https://avatars.discourse-cdn.com/v4/letter/a/90ced4/32.png) [@Ahmed\_Abdulaleem](https://discuss.elastic.co/u/Ahmed_Abdulaleem)\
**Post date:** [April 30, 2020, 12:28pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-2-client-requested-protocol-tlsv1-is-not-enabled-or-supported-in-server-context/230547/1 "2020-04-30T12:28:18Z")

</div>

Good Day,

are there a way to force elastic search use TLSV1 when negotiating with client  
the client is a web application running under IIS web server.

Error Log:  
javax.net.ssl.SSLHandshakeException: Client requested protocol TLSv1 is not enabled or supported in the server context

---

<div class="post-metadata">

**Author:** ![ikakavas](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ikakavas/32/34430_2.png) [@ikakavas](https://discuss.elastic.co/u/ikakavas)\
**Post date:** [April 30, 2020, 1:16pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-2-client-requested-protocol-tlsv1-is-not-enabled-or-supported-in-server-context/230547/2 "2020-04-30T13:16:03Z")

</div>

It is disabled by default, and with good reasons. If you definitely can't enable your client application to support a safe TLS version , you can [explicitly enable](https://www.elastic.co/guide/en/elasticsearch/reference/7.0/breaking-changes-7.0.html#tls-v1-removed) TLS V1.0

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 28, 2020, 1:16pm UTC](https://discuss.elastic.co/t/elasticsearch-7-6-2-client-requested-protocol-tlsv1-is-not-enabled-or-supported-in-server-context/230547/3 "2020-05-28T13:16:05Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.