# Error - Participant already exist

**URL:** <https://devforum.zoom.us/t/error-participant-already-exist/70470>\
**Category:** Web\
**Created:** [June 14, 2022, 6:44am UTC](https://devforum.zoom.us/t/error-participant-already-exist/70470 "2022-06-14T06:44:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![adpv](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/adpv/32/3359_2.png) [@adpv](https://devforum.zoom.us/u/adpv)\
**Post date:** [June 14, 2022, 6:44am UTC](https://devforum.zoom.us/t/error-participant-already-exist/70470/1 "2022-06-14T06:44:26Z")

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Participants are regularly complaining regarding error “Participant already exist”. We have checked login info in our application and found that participant did not login from multiple devices. Please help to resolve. This error message is coming after updating Web SDK version 2.4.0.

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**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\
**Post date:** [June 15, 2022, 6:41pm UTC](https://devforum.zoom.us/t/error-participant-already-exist/70470/2 "2022-06-15T18:41:23Z")

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Hi @adpv

Thanks for reaching out to the Zoom Developer Forum, I am happy to help here!  
Are you still experiencing this issue? How are you handling registration?

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [July 16, 2022, 4:42am UTC](https://devforum.zoom.us/t/error-participant-already-exist/70470/3 "2022-07-16T04:42:15Z")

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Closed on July 16, 2022, 4:42am UTC

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