# Can not join meeting when windows load

**URL:** <https://devforum.zoom.us/t/can-not-join-meeting-when-windows-load/9341>\
**Category:** Web\
**Created:** [March 23, 2020, 7:08pm UTC](https://devforum.zoom.us/t/can-not-join-meeting-when-windows-load/9341 "2020-03-23T19:08:04Z")\
**Posts on this page:** 1\
**Showing post:** 7

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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:** [March 24, 2020, 6:23pm UTC](https://devforum.zoom.us/t/can-not-join-meeting-when-windows-load/9341/7 "2020-03-24T18:23:52Z")

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Hey @tranvuong1803,

They both appear correct, but maybe there is a bug in the c# example.

Here is a Node.js signature sample app you could use in the meantime:

[https://marketplace.zoom.us/docs/sdk/native-sdks/web/essential/signature#simple-signature-setup](https://marketplace.zoom.us/docs/sdk/native-sdks/web/essential/signature#simple-signature-setup)

Related thread:

> [@Invalid Signature C#](https://devforum.zoom.us/t/invalid-signature-c/6542):
>
> Description/Error When generating a signature from a .net core 3.0 api server using the c# example from ([https://marketplace.zoom.us/docs/sdk/native-sdks/Web-Client-SDK/tutorial/generate-signature](https://marketplace.zoom.us/docs/sdk/native-sdks/Web-Client-SDK/tutorial/generate-signature)) it fails with an invalid signature error. {method: “join”, status: false, errorCode: 1, errorMessage: “Invalid signature.”, result: null} C# Code: Where as using ZoomMtg.generateSignature with the same data works. var signature = ZoomMtg.generateSignature({ meetingNumber: data.me…

Thanks,  
Tommy

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