# Zoom Web SDK invalid Signature Error **URL:** \ **Category:** Web\ **Created:** [January 29, 2021, 7:57am UTC](https://devforum.zoom.us/t/zoom-web-sdk-invalid-signature-error/41903 "2021-01-29T07:57:55Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![hardikm7584](https://avatars.discourse-cdn.com/v4/letter/h/c4cdca/32.png) [@hardikm7584](https://devforum.zoom.us/u/hardikm7584)\ **Post date:** [January 29, 2021, 7:57am UTC](https://devforum.zoom.us/t/zoom-web-sdk-invalid-signature-error/41903/1 "2021-01-29T07:57:56Z")
We are trying to join Zoom meeting through Web SDK. For that we are passing actual Meeting ID that i got from my Zoom account and creating signature based on that Signature: MeetingID: below is source code we are using ![MST-image](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/0/f/0fc6d7d507999fcb9b2b2c448656538a90377f42.png) Still we are getting below error ![MicrosoftTeams-image](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/1/d/1df72de8a5ee9ab948f2315e7818dcd726a57c17.png) Please help to fix this ---
**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 30, 2021, 7:39pm UTC](https://devforum.zoom.us/t/zoom-web-sdk-invalid-signature-error/41903/2 "2021-01-30T19:39:16Z")
Hey @hardikm7584 , It looks like you are using an SDK app key and secret to generate your signature. Please use a [JWT App](https://marketplace.zoom.us/docs/guides/build/jwt-app) instead. 🙂 Thanks, Tommy ---
**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:** [March 2, 2021, 5:39am UTC](https://devforum.zoom.us/t/zoom-web-sdk-invalid-signature-error/41903/3 "2021-03-02T05:39:44Z")
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