# Invalid Signature with Sample Web App

**URL:** <https://devforum.zoom.us/t/invalid-signature-with-sample-web-app/4005>\
**Category:** Web\
**Created:** [April 23, 2019, 1:35am UTC](https://devforum.zoom.us/t/invalid-signature-with-sample-web-app/4005 "2019-04-23T01:35:44Z")\
**Posts on this page:** 1\
**Showing post:** 128

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**Author:** ![yashkalra088](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/yashkalra088/32/52881_2.png) [@yashkalra088](https://devforum.zoom.us/u/yashkalra088)\
**Post date:** [January 10, 2024, 7:44am UTC](https://devforum.zoom.us/t/invalid-signature-with-sample-web-app/4005/128 "2024-01-10T07:44:53Z")

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Hi,  
I am getting signature invalid for some users and for some it is working fine. My token and its values are perfectly fine.  
Can anyone please help me with this issue, this is my ticket :

> [@Signature is invalid Error Code 3712 in reactjs](https://devforum.zoom.us/t/signature-is-invalid-error-code-3712-in-reactjs/101456):
>
> Hi , Description I am getting signature is valid from zoom for some users not all users. Also if you use same user account in another laptop it is working fine. the SDK token is exact valid when it comes to iat, exp ,sdk key everything is perfect. I am using it for only participant so role is 0 always. can anyone help me with this . Error Signature is invalid. Which version of zoom? “@zoomus/websdk”: “^2.17.0”,

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