# "Signature is invalid."

**URL:** <https://devforum.zoom.us/t/signature-is-invalid/29518>\
**Category:** Web\
**Created:** [September 8, 2020, 2:43pm UTC](https://devforum.zoom.us/t/signature-is-invalid/29518 "2020-09-08T14:43:52Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jsharookh848](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jsharookh848/32/6392_2.png) [@jsharookh848](https://devforum.zoom.us/u/jsharookh848)\
**Post date:** [September 8, 2020, 2:43pm UTC](https://devforum.zoom.us/t/signature-is-invalid/29518/1 "2020-09-08T14:43:52Z")

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**Description**  
We are letting users join meeting created by other users from there account. When loading the page it is returning error Invalid signature

**Error**

1. errorCode: 3712
2. errorMessage: "Signature is invalid  
My code is  
\> ZoomMtg.join({

> ```
> signature: meetConfig.signature,
> meetingNumber: meetConfig.meetingNumber,
> userName: meetConfig.userName,
> apiKey: meetConfig.apiKey,
> userEmail: meetConfig.userEmail, 
> passWord: meetConfig.password,
> success: (success) => {
> console.log(success);
> },
> 
> ```
> 
> error: (error) =\> {  
> console.log(error)  
> }  
> });

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**Author:** ![will.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/will.zoom/32/14417_2.png) [@will.zoom](https://devforum.zoom.us/u/will.zoom)\
**Post date:** [September 11, 2020, 2:28pm UTC](https://devforum.zoom.us/t/signature-is-invalid/29518/2 "2020-09-11T14:28:22Z")

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HI @jsharookh848,

Can you share your encoded signature with me? This will help me to debug.

Thanks,  
Will

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**Author:** ![jsharookh848](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jsharookh848/32/6392_2.png) [@jsharookh848](https://devforum.zoom.us/u/jsharookh848)\
**Post date:** [September 12, 2020, 4:02am UTC](https://devforum.zoom.us/t/signature-is-invalid/29518/3 "2020-09-12T04:02:55Z")

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Hi  
Thank you for the reply. I could fix it myself. I was using WEB SDK API ans secret when i use JWT keys it solved my problem.  
Now i would like to know if there is any chance i can mute and turn off video for all attendees using the SDK. i saw that there is a muteall fuction . But later the attendees are able to unmute themself.  
Thank you  
Jasim

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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:** [September 14, 2020, 9:42pm UTC](https://devforum.zoom.us/t/signature-is-invalid/29518/4 "2020-09-14T21:42:11Z")

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Hey @jsharookh848,

Happy to hear you resolved your signature issue.

As for your follow up, checkout my post here:

> [@Mute On Entry settings in the account settings is not applicable on the meeting in the web sdk](https://devforum.zoom.us/t/mute-on-entry-settings-in-the-account-settings-is-not-applicable-on-the-meeting-in-the-web-sdk/29438):
>
> Description I want that all participants of a meetings join the meeting on mute. also I don’t want that anyone of them can unmute themselves. I saw this option in the account settings menu though even after activating it, it doesn’t seem to be applied on the meeting, everyone can unmute themselves. is this applicable on the websdk or not? Which version? version 1.8

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:** [October 15, 2020, 7:42am UTC](https://devforum.zoom.us/t/signature-is-invalid/29518/5 "2020-10-15T07:42:12Z")

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Closed on October 15, 2020, 7:42am UTC

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