# Add webinar registrant api

**URL:** <https://devforum.zoom.us/t/add-webinar-registrant-api/5348>\
**Category:** API and Webhooks\
**Created:** [August 4, 2019, 8:58am UTC](https://devforum.zoom.us/t/add-webinar-registrant-api/5348 "2019-08-04T08:58:27Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![john1492](https://avatars.discourse-cdn.com/v4/letter/j/dfb087/32.png) [@john1492](https://devforum.zoom.us/u/john1492)\
**Post date:** [August 5, 2019, 9:46pm UTC](https://devforum.zoom.us/t/add-webinar-registrant-api/5348/4 "2019-08-05T21:46:17Z")

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We were experiencing a similar issue after the updates this past weekend. The client we were using was based on an older version of Java 1.7 that did not have TSLv1.2 support. Upgrading and using TSLv1.2 appears to have corrected our issue

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