# PreMeetingService broken?

**URL:** <https://devforum.zoom.us/t/premeetingservice-broken/971>\
**Category:** Windows\
**Created:** [February 10, 2018, 11:18am UTC](https://devforum.zoom.us/t/premeetingservice-broken/971 "2018-02-10T11:18:36Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Piyush\_Chopra](https://avatars.discourse-cdn.com/v4/letter/p/46a35a/32.png) [@Piyush\_Chopra](https://devforum.zoom.us/u/Piyush_Chopra)\
**Post date:** [February 10, 2018, 11:18am UTC](https://devforum.zoom.us/t/premeetingservice-broken/971/1 "2018-02-10T11:18:36Z")

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I want to use the PreMeetingService in my application. If I create it right after InitSDK I get the following error code: SDKERR\_UNAUTHENTICATION. If I create it after authentication has succeeded in onAuthenticationReturn I get the following error code: SDKERR\_WRONG\_USEAGE

I can create MeetingService without any problems at both places. Can you help me please?

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**Author:** ![dats\_liao](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dats_liao/32/464_2.png) [@dats\_liao](https://devforum.zoom.us/u/dats_liao)\
**Post date:** [February 11, 2018, 1:16am UTC](https://devforum.zoom.us/t/premeetingservice-broken/971/2 "2018-02-11T01:16:44Z")

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hi,

you need to&nbsp; call&nbsp;ZOOM\_SDK\_NAMESPACE.IAuthService.SDKAuth&nbsp; firstly and waiting for the&nbsp;ZOOM\_SDK\_NAMESPACE.IAuthServiceEvent&nbsp; callback event. after that, you call other windows sdk APIs.

thanks.

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<div class="post-metadata">

**Author:** ![Piyush\_Chopra](https://avatars.discourse-cdn.com/v4/letter/p/46a35a/32.png) [@Piyush\_Chopra](https://devforum.zoom.us/u/Piyush_Chopra)\
**Post date:** [February 11, 2018, 9:14am UTC](https://devforum.zoom.us/t/premeetingservice-broken/971/3 "2018-02-11T09:14:26Z")

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Hi,

thanksI tried that also. If I wait for the ZOOM\_SDK\_NAMESPACE.IAuthServiceEvent, I get SDKERR\_WRONG\_USEAGE when I want to create the PreMeetingService. Again the MeetingService can be created without any problems. So what should I do?

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**Author:** ![dats\_liao](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dats_liao/32/464_2.png) [@dats\_liao](https://devforum.zoom.us/u/dats_liao)\
**Post date:** [February 13, 2018, 1:24am UTC](https://devforum.zoom.us/t/premeetingservice-broken/971/4 "2018-02-13T01:24:23Z")

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only login user can use IPreMeetingService. if you want to use this service, please login your zoom account. thanks.

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**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\
**Post date:** [August 21, 2020, 5:37pm UTC](https://devforum.zoom.us/t/premeetingservice-broken/971/5 "2020-08-21T17:37:17Z")

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Closed on August 21, 2020, 5:37pm UTC