# Invalid signature err

**URL:** <https://devforum.zoom.us/t/invalid-signature-err/75695>\
**Category:** Web\
**Tags:** meeting-sdk\
**Created:** [September 9, 2022, 1:04pm UTC](https://devforum.zoom.us/t/invalid-signature-err/75695 "2022-09-09T13:04:35Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![elmolcenter](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elmolcenter/32/41232_2.png) [@elmolcenter](https://devforum.zoom.us/u/elmolcenter)\
**Post date:** [September 9, 2022, 1:04pm UTC](https://devforum.zoom.us/t/invalid-signature-err/75695/1 "2022-09-09T13:04:35Z")

</div>

The previous week i was using my zoom sdk app normally without having any bugs and without having any issues now it says to me

1. errorCode: 3712
2. errorMessage: “Signature is invalid.”
3. method: “join”
4. result: “Invalid signature.”
5. status: false  
version: 2.6.0  
i have checked credintials so many times this is my signature  
eyJhbGciO[REDACTED]UsIv3-4RkO-0lQ

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<div class="post-metadata">

**Author:** ![j.schoenemeyer](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@j.schoenemeyer](https://devforum.zoom.us/u/j.schoenemeyer)\
**Post date:** [September 9, 2022, 5:59pm UTC](https://devforum.zoom.us/t/invalid-signature-err/75695/2 "2022-09-09T17:59:16Z")

</div>

```auto
{
  "alg":"HS256",
  "typ":"JWT"
}
{
  "sdkKey": "37Hm4tqH3hivbcic7trVNwgqhSGe....",
  "mn": "8703113....",
  "role": 1,
  "iat": 1662728120, // Friday, 9 September 2022 12:55:20
  "exp": 1662735320, // Friday, 9 September 2022 14:55:20
  "appKey": "37Hm4tqH3hivbcic7trVNwgqhSGe....",
  "tokenExp": 1662735320 // Friday, 9 September 2022 14:55:20
}

```

your token looks good

update to 2.7.0, create a new simple test meeting

- Registration NOT required
- a simple Passcode
- no waiting room
- Options: Allow participants to join anytime

enter meeting with “role = 0” (as attendee)

what happens?

Jürgen

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<div class="post-metadata">

**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [September 9, 2022, 11:04pm UTC](https://devforum.zoom.us/t/invalid-signature-err/75695/3 "2022-09-09T23:04:50Z")

</div>

@j.schoenemeyer thanks for helping @elmolcenter with this! We are not supposed to share tokens on the forum so I’m redacting that info.

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<div class="post-metadata">

**Author:** ![elmolcenter](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elmolcenter/32/41232_2.png) [@elmolcenter](https://devforum.zoom.us/u/elmolcenter)\
**Post date:** [September 10, 2022, 5:20pm UTC](https://devforum.zoom.us/t/invalid-signature-err/75695/4 "2022-09-10T17:20:39Z")

</div>

still the same bug nothing still tilling me signature is invalid

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<div class="post-metadata">

**Author:** ![j.schoenemeyer](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@j.schoenemeyer](https://devforum.zoom.us/u/j.schoenemeyer)\
**Post date:** [September 11, 2022, 6:35am UTC](https://devforum.zoom.us/t/invalid-signature-err/75695/5 "2022-09-11T06:35:43Z")

</div>

then you have to check if your sdk app (or your zoom account) is broken

I would check it with the example app on github (-\> CDN version)

> **[GitHub - zoom/meetingsdk-web-sample: Zoom Meeting SDK Web Sample App](https://github.com/zoom/meetingsdk-web-sample)**
>
> Zoom Meeting SDK Web Sample App. Contribute to zoom/meetingsdk-web-sample development by creating an account on GitHub.

If you get the same error, recreate the Meeting SDK app

if this don’t help create a new free zoom account, create a Meeting SDK app and test  
(hint: you can use this app to get token for your original account meeting - tested with “role=0”)

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<div class="post-metadata">

**Author:** ![michael\_p.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_p.zoom/32/18105_2.png) [@michael\_p.zoom](https://devforum.zoom.us/u/michael_p.zoom)\
**Post date:** [September 14, 2022, 1:46am UTC](https://devforum.zoom.us/t/invalid-signature-err/75695/6 "2022-09-14T01:46:53Z")

</div>

Hi @elmolcenter,

Were you able to get the same error with using the Web SDK sample app from github?

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<div class="post-metadata">

**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:** [October 14, 2022, 11:47am UTC](https://devforum.zoom.us/t/invalid-signature-err/75695/7 "2022-10-14T11:47:02Z")

</div>

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