# Demo SDK Application error 10124

**URL:** <https://devforum.zoom.us/t/demo-sdk-application-error-10124/42151>\
**Category:** Meeting SDK\
**Created:** [February 1, 2021, 2:14pm UTC](https://devforum.zoom.us/t/demo-sdk-application-error-10124/42151 "2021-02-01T14:14:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cbconrad92](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/cbconrad92/32/22406_2.png) [@cbconrad92](https://devforum.zoom.us/u/cbconrad92)\
**Post date:** [February 1, 2021, 2:14pm UTC](https://devforum.zoom.us/t/demo-sdk-application-error-10124/42151/1 "2021-02-01T14:14:56Z")

</div>

**Description**  
Error 10124 occurs when attempting to authorise JWT key in Zoom Demo SDK.  
SDH Key and secret are being used from the Zoom Marketplace.

JWT Key structured in the format as per changelog.md using [jwt.io](http://jwt.io) (copying from encoded tab)

Header  
{  
“alg”: “HS256”,  
“typ”: “JWT”  
}

{  
“appkey”: “\*\*\*\*\*\*”,  
“iat”: 1612180560 // Zoom SDK registered at 11:56 GMT 01/02/21 ,  
“exp”: 1612266960 // set to expire 1 day later at 11:56 GMT 02/02/21,  
“tokenExp”: 1612194960 // Token set to expire 4 hours after registration 15:56 GMT 01/02/21  
}

Signature is copied from the SDK Secret and is not base64 encoded.  
Copy and paste from JWT to SDK and attempt to authorise gives error 10124 Lasterrortype\_Auth.

**Which version?**  
5.4.54802.0124

**Screenshots**  
If applicable, add screenshots to help explain your problem.

**Device (please complete the following information):**

- Device Spec: PC
- OS: Windows 10
- Version 20H2

**Additional context**  
Unable to authroise JWT key using SDK master and secret using downloaded Zoom SDK from marketplace. Any help would be much appreciated!

Kind regards,  
Chris

---

<div class="post-metadata">

**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\
**Post date:** [February 2, 2021, 11:22pm UTC](https://devforum.zoom.us/t/demo-sdk-application-error-10124/42151/2 "2021-02-02T23:22:26Z")

</div>

Hey @cbconrad92,

Thanks for using the dev forum!

Did you copy the JWT from the encoded text box or the “SHARE JWT” button? The value from the “SHARE JWT” button will be incorrect.

Did you copy the SDK Key and Secret from the SDK tile of the Zoom Marketplace or the JWT tile? The key and secret from the JWT tile is for the API only and will not work with the SDK.

Thanks!  
Michael