# Unreal Engine SDKERR\_WRONG\_USAGE when joining a meeting

**URL:** <https://devforum.zoom.us/t/unreal-engine-sdkerr-wrong-usage-when-joining-a-meeting/147219>\
**Category:** Meeting SDK\
**Tags:** apps\
**Created:** [October 16, 2026, 2:07am UTC](https://devforum.zoom.us/t/unreal-engine-sdkerr-wrong-usage-when-joining-a-meeting/147219 "2026-10-16T02:07:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Josh19](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/josh19/32/77350_2.png) [@Josh19](https://devforum.zoom.us/u/Josh19)\
**Post date:** [October 16, 2026, 2:07am UTC](https://devforum.zoom.us/t/unreal-engine-sdkerr-wrong-usage-when-joining-a-meeting/147219/1 "2026-10-16T02:07:04Z")

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### Format Your New Topic as Follows:

**Meeting SDK for Unreal Engine v6.1.5**

I’m following the example provided by zoom but I am unable to join a meeting. I’m using the blueprint interfaces. I try to join the meeting using the following sequence of graphs:

- I successfully get a ZAK token
- I authenticate and init the SDK successfully
- I hit the Execute Zoom Join Meeting node I get the error: ZoomMeetingSDKJoinMeeting: err: SDKERR\_WRONG\_USAGE

I have double (and triple) checked that I am inputting a valid Meeting Number, Passcode, and ZAK. My authentication and init is completed and returns a success code. I have tried multiple meeting and passcode combinations. I also have hard-coded the meeting number and passcode into the Join Meeting node. My init and auth return the following codes:

> BPZoomMeetingSDKLog: Display: InitSDKWithUIOption - Done: SDKERR\_SUCCESS  
> BPZoomMeetingSDKLog: Display: ZoomMeetingSDKAuthJWT: err: SDKERR\_SUCCESS  
> LogBlueprintUserMessages: [ZoomController\_C\_0] Sent Auth Request  
> ZoomMeetingSDKLog: Display: onAuthenticationReturn: AUTHRET\_SUCCESS  
> BPZoomMeetingSDKLog: Display: ZoomMeetingSDKEventHandler::onAuthenticationReturn triggered: AUTHRET\_SUCCESS

I feel like I am missing something easy, but I can’t figure it out and my research shows the WRONG\_USAGE error could mean a number of different things. I feel like I’ve eliminated them, but clearly I haven’t. Does anyone have any suggestions?

Thanks,  
Josh