# Zoom sample-web-app "Signature is invalid" 3712 error code

**URL:** <https://devforum.zoom.us/t/zoom-sample-web-app-signature-is-invalid-3712-error-code/40089>\
**Category:** Web\
**Created:** [January 8, 2021, 9:57pm UTC](https://devforum.zoom.us/t/zoom-sample-web-app-signature-is-invalid-3712-error-code/40089 "2021-01-08T21:57:51Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![wizard\_files3](https://avatars.discourse-cdn.com/v4/letter/w/a587f6/32.png) [@wizard\_files3](https://devforum.zoom.us/u/wizard_files3)\
**Post date:** [January 8, 2021, 9:57pm UTC](https://devforum.zoom.us/t/zoom-sample-web-app-signature-is-invalid-3712-error-code/40089/1 "2021-01-08T21:57:51Z")

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![Screen Shot 2021-01-08 at 1.50.12 PM](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/d/8/d8a7fd60444e9440588f407a4de2d4be26842c58.png)

**Description**  
Hi, I am getting 3712 error code.  
I am using a sample-web-app, which is running Local at [http://0.0.0.0:9999/](http://0.0.0.0:9999/)  
I input into index.js API\_KEY and API\_SECRET generated from JWT

**Error**  
Signature is invalid (3712)

**Which version?**  
I am using latest version: 1.8.5 (downloaded on 1/8/2020)

**To Reproduce(If applicable)**  
npm install  
npm run start  
go to [http://0.0.0.0:9999/](http://0.0.0.0:9999/)  
input meeting id (no spaces) and meeting password  
press “Join”

**Device (please complete the following information):**  
Mac OS  
Latest Chrome version

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<div class="post-metadata">

**Author:** ![wizard\_files3](https://avatars.discourse-cdn.com/v4/letter/w/a587f6/32.png) [@wizard\_files3](https://devforum.zoom.us/u/wizard_files3)\
**Post date:** [January 8, 2021, 9:59pm UTC](https://devforum.zoom.us/t/zoom-sample-web-app-signature-is-invalid-3712-error-code/40089/2 "2021-01-08T21:59:30Z")

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Sorry, being a software engineer for 20 years, let me paste here strings so someone would not have to get it from a screenshot 🙂  
signature:

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<div class="post-metadata">

**Author:** ![wizard\_files3](https://avatars.discourse-cdn.com/v4/letter/w/a587f6/32.png) [@wizard\_files3](https://devforum.zoom.us/u/wizard_files3)\
**Post date:** [January 8, 2021, 10:00pm UTC](https://devforum.zoom.us/t/zoom-sample-web-app-signature-is-invalid-3712-error-code/40089/3 "2021-01-08T22:00:56Z")

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![Screen Shot 2021-01-08 at 2.00.26 PM](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/d/f/dfddc983e5bd6a387c12b407a254b14241da29d5.png)

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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:** [January 11, 2021, 10:13pm UTC](https://devforum.zoom.us/t/zoom-sample-web-app-signature-is-invalid-3712-error-code/40089/4 "2021-01-11T22:13:29Z")

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Hey @wizard_files3 ,

The API Key you used to generate the Web SDK signature is not the same API Key that you shared.

Double check you are using a [JWT App](https://marketplace.zoom.us/docs/guides/auth/jwt) API Key and Secret to generate the Web SDK signature. 🙂

Thanks,  
Tommy

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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:** [February 11, 2021, 8:13am UTC](https://devforum.zoom.us/t/zoom-sample-web-app-signature-is-invalid-3712-error-code/40089/5 "2021-02-11T08:13:32Z")

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Closed on February 11, 2021, 8:13am UTC

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