# X509 certificate signed by unknown authority

**URL:** <https://devforum.zoom.us/t/x509-certificate-signed-by-unknown-authority/60847>\
**Category:** API and Webhooks\
**Created:** [November 29, 2021, 6:41pm UTC](https://devforum.zoom.us/t/x509-certificate-signed-by-unknown-authority/60847 "2021-11-29T18:41:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![shanekim](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/shanekim/32/32942_2.png) [@shanekim](https://devforum.zoom.us/u/shanekim)\
**Post date:** [November 29, 2021, 6:41pm UTC](https://devforum.zoom.us/t/x509-certificate-signed-by-unknown-authority/60847/1 "2021-11-29T18:41:21Z")

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Hello,

I’m using GO lang library ([GitHub - zoom-lib-golang/zoom-lib-golang: Zoom.us client library for Go (Golang)](https://github.com/zoom-lib-golang/zoom-lib-golang)) first of all.

When I call GetUser, Zoom API does not seem to validate ssl certificate.

When I tested it on my local environment, I was using ngrok’s https tunnel and it worked without any issue. I pushed the same image to ECR, created the service via ECS, created a new end point with ssl cert created by amazon certificate manager. From that env, when the app calls GetUser method from the library, I get this error message:

x509: certificate signed by unknown authority

I have set zoom api key and secret as environment variables and then set zoom.APIKey and zoom.APISecret using the env vars.

Any suggestions/recommendations to debug the issue please?

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<div class="post-metadata">

**Author:** ![shanekim](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/shanekim/32/32942_2.png) [@shanekim](https://devforum.zoom.us/u/shanekim)\
**Post date:** [December 1, 2021, 9:23pm UTC](https://devforum.zoom.us/t/x509-certificate-signed-by-unknown-authority/60847/3 "2021-12-01T21:23:17Z")

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Never mind. It was a root cert missing from the container. Once installed, it’s all good.

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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:** [December 3, 2021, 3:02pm UTC](https://devforum.zoom.us/t/x509-certificate-signed-by-unknown-authority/60847/4 "2021-12-03T15:02:32Z")

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Glad you resolved it! 🙂

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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:** [January 3, 2022, 1:03am UTC](https://devforum.zoom.us/t/x509-certificate-signed-by-unknown-authority/60847/5 "2022-01-03T01:03:27Z")

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Closed on January 3, 2022, 1:03am UTC

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