# Auto create registrants to webinar

**URL:** <https://devforum.zoom.us/t/auto-create-registrants-to-webinar/17449>\
**Category:** API and Webhooks\
**Created:** [May 13, 2020, 1:03pm UTC](https://devforum.zoom.us/t/auto-create-registrants-to-webinar/17449 "2020-05-13T13:03:03Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [June 4, 2020, 4:06pm UTC](https://devforum.zoom.us/t/auto-create-registrants-to-webinar/17449/8 "2020-06-04T16:06:42Z")

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Hey @jkl,

I believe I figured out the issue. If you try to register users while also having the [enforce authentication when joining webinar / meeting setting turned on](https://support.zoom.us/hc/en-us/articles/360037117472-Authentication-Profiles-for-meetings-and-webinars), it will throw the user does not exist error.

Please double check you have this setting disabled:

 ![Screen Shot 2020-06-04 at 10.05.35 AM](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/c/c2e012de2b90ba630452c6a045ec59066aec6dcd.png)

Thanks,  
Tommy

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