# JS errorMessage: "Invalid signature." **URL:** \ **Category:** Web\ **Created:** [March 28, 2019, 11:21am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770 "2019-03-28T11:21:20Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![antoine.thierry](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@antoine.thierry](https://devforum.zoom.us/u/antoine.thierry)\ **Post date:** [March 28, 2019, 11:21am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/1 "2019-03-28T11:21:20Z")
Hi i’m trying to use the 1.3.8 JS viewer to build a “internal corporate TV” with zoom (that we already have) i’m using the GitHub demo ([https://github.com/zoom/sample-app-web](https://github.com/zoom/sample-app-web)) but the signature made by some JS script is invalid for zoom server what about ? thanks for future answer ! antoine ---
**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:** [March 28, 2019, 4:46pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/2 "2019-03-28T16:46:43Z")
Hi @antoine.thierry, Can you post the exact error that you see in the browser tools? Also do you have the API Key/secret entered in the index.js file? Thanks ---
**Author:** ![antoine.thierry](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@antoine.thierry](https://devforum.zoom.us/u/antoine.thierry)\ **Post date:** [March 28, 2019, 9:29pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/3 "2019-03-28T21:29:44Z")
Hi michael ! i found the answer a few hours ago **reason : do not use “-” in the zoom meeting id’s** it was not written where i go. i changed the JS implementation, then i debugged, then i find, then it works thanks antoine ---
**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:** [March 28, 2019, 11:28pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/4 "2019-03-28T23:28:22Z")
Glad that you were able to find the answer, we’ll update our documentation to include notes about not using the “-” for meeting IDs. Thanks ---
**Author:** ![j.amelsberg](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/j.amelsberg/32/11997_2.png) [@j.amelsberg](https://devforum.zoom.us/u/j.amelsberg)\ **Post date:** [July 16, 2020, 9:16am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/6 "2020-07-16T09:16:16Z")
Hi I’m trying to use the 1.7.10 JS viewer (CDN version) ([https://github.com/zoom/sample-app-web](https://github.com/zoom/sample-app-web)), but I get error “Signuture is invalid” when I enter real meeting number, example (\*\*\*\*\*\*\*\*\*\*\*, no password, no email, attendee ). It would be great if you can help me with this. thanks for future answer ! jan \*This post has been edited to remove any meeting / webinar IDs ---
**Author:** ![zmalik976](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/zmalik976/32/12076_2.png) [@zmalik976](https://devforum.zoom.us/u/zmalik976)\ **Post date:** [July 17, 2020, 11:10am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/7 "2020-07-17T11:10:39Z")
hi, how r u, i am having isseu, i used web sample app for client, and jwt api, but whn client uses its api, and my meeting number, it show invalid signature, but whn i use my meeting number it work? does one app connect to one meeting number? ---
**Author:** ![j.amelsberg](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/j.amelsberg/32/11997_2.png) [@j.amelsberg](https://devforum.zoom.us/u/j.amelsberg)\ **Post date:** [July 20, 2020, 8:04am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/8 "2020-07-20T08:04:42Z")
hello, but we don’t include the “-” for meeting IDs, only numbers like “\*\*\*\*\*\*\*\*\*\*\*” and this don’t work here. \*This post has been edited to remove any meeting / webinar IDs ---
**Author:** ![zmalik976](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/zmalik976/32/12076_2.png) [@zmalik976](https://devforum.zoom.us/u/zmalik976)\ **Post date:** [July 20, 2020, 2:47pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/9 "2020-07-20T14:47:53Z")
sorry didnt ger? i dont added - in id, and what dont work here? does zoom app api work for one email account? ---
**Author:** ![j.amelsberg](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/j.amelsberg/32/11997_2.png) [@j.amelsberg](https://devforum.zoom.us/u/j.amelsberg)\ **Post date:** [July 20, 2020, 4:00pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/10 "2020-07-20T16:00:39Z")
yes, this don’t work (ID without slashes) and we tried it for two email accounts. ---
**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:** [July 22, 2020, 9:07pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/11 "2020-07-22T21:07:48Z")
Hey @j.amelsberg, @zmalik976, Please share your [Web SDK signatures](https://marketplace.zoom.us/docs/sdk/native-sdks/web/essential/signature) to [developersupport@zoom.us](mailto:developersupport@zoom.us) so I can debug the issue. Thanks, Tommy ---
**Author:** ![j.amelsberg](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/j.amelsberg/32/11997_2.png) [@j.amelsberg](https://devforum.zoom.us/u/j.amelsberg)\ **Post date:** [July 22, 2020, 10:03pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/12 "2020-07-22T22:03:10Z")
hello @tommy, it works. I use SDK but put JWT settings in config. thank you! ---
**Author:** ![zmalik976](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/zmalik976/32/12076_2.png) [@zmalik976](https://devforum.zoom.us/u/zmalik976)\ **Post date:** [July 23, 2020, 12:33am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/13 "2020-07-23T00:33:30Z")
[signature redacted] ---
**Author:** ![zhaowentao](https://avatars.discourse-cdn.com/v4/letter/z/dfb087/32.png) [@zhaowentao](https://devforum.zoom.us/u/zhaowentao)\ **Post date:** [July 24, 2020, 7:56am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/14 "2020-07-24T07:56:40Z")
Hi,I’m trying to use the Zoom Web SDK ( Local Install) (I use the exmple with right apiKey and apiSecret : [https://github.com/zoom/sample-app-web.git](https://github.com/zoom/sample-app-web.git)), but I get error “Signuture is invalid” when I enter real meeting number, example (meetingNumber: \*\*\*\*\*\*\*\*\*\*\*, passWord:, no email, attendee ). I don’t include the “-” for meeting IDs, only numbers. \*This post has been edited to remove any meeting / webinar IDs ---
**Author:** ![zhaowentao](https://avatars.discourse-cdn.com/v4/letter/z/dfb087/32.png) [@zhaowentao](https://devforum.zoom.us/u/zhaowentao)\ **Post date:** [July 24, 2020, 7:57am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/15 "2020-07-24T07:57:45Z")
Hey,I’m trying to use the Zoom Web SDK ( Local Install) (I use the exmple with right apiKey and apiSecret : [https://github.com/zoom/sample-app-web.git](https://github.com/zoom/sample-app-web.git)), but I get error “Signuture is invalid” when I enter real meeting number, example (meetingNumber: \*\*\*\*\*\*\*\*\*\*\*, passWord:, no email, attendee ). I don’t include the “-” for meeting IDs, only numbers. Thanks. \*This post has been edited to remove any meeting / webinar IDs ---
**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:** [July 28, 2020, 12:06am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/16 "2020-07-28T00:06:09Z")
Happy to help! 🙂 Thanks, Tommy ---
**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:** [July 28, 2020, 12:06am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/17 "2020-07-28T00:06:49Z")
Hey @zmalik976, After [base 64 decoding](https://www.base64decode.org/) your signature, it looks like you are not setting the role when generating the signature. Thanks, Tommy ---
**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:** [July 28, 2020, 12:07am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/18 "2020-07-28T00:07:25Z")
Hey @zhaowentao, What is the [Web SDK signature](https://marketplace.zoom.us/docs/sdk/native-sdks/web/essential/signature) you are generating so I can debug it? Thanks, Tommy ---
**Author:** ![zhaowentao](https://avatars.discourse-cdn.com/v4/letter/z/dfb087/32.png) [@zhaowentao](https://devforum.zoom.us/u/zhaowentao)\ **Post date:** [July 28, 2020, 1:28am UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/19 "2020-07-28T01:28:44Z")
thanks, The problem has been solved。Because i missed the apiKey with the appKey. 😊 ---
**Author:** ![aitsidihammou.achraf](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/aitsidihammou.achraf/32/12633_2.png) [@aitsidihammou.achraf](https://devforum.zoom.us/u/aitsidihammou.achraf)\ **Post date:** [July 28, 2020, 5:07pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/20 "2020-07-28T17:07:46Z")
Hi, I’ve also cloned the sample-app-web (CDN), added my API key and secret but I still get the “signature is invalid” error. Here are more information: Meeting number: \*\*\*\*\*\*\*\*\*\*\* Meeting pwd: role: 0 Signature: Thanks \*This post has been edited to remove any meeting / webinar IDs ---
**Author:** ![aitsidihammou.achraf](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/aitsidihammou.achraf/32/12633_2.png) [@aitsidihammou.achraf](https://devforum.zoom.us/u/aitsidihammou.achraf)\ **Post date:** [July 28, 2020, 6:01pm UTC](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770/21 "2020-07-28T18:01:19Z")
Sorry I’ve just found out that I need to use JWT Key and Secret to make it work. [Next page](https://devforum.zoom.us/t/js-errormessage-invalid-signature/3770.md?page=2)