# Guests from China cannot join a meeting

**URL:** <https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793>\
**Category:** Web\
**Created:** [August 21, 2020, 12:43pm UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793 "2020-08-21T12:43:59Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![guiltdriver](https://avatars.discourse-cdn.com/v4/letter/g/5f9b8f/32.png) [@guiltdriver](https://devforum.zoom.us/u/guiltdriver)\
**Post date:** [August 21, 2020, 12:43pm UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793/1 "2020-08-21T12:43:59Z")

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**Description**  
Even with the data centre set up, guest from China will be distributed to different data centres and that leads to high failure rate…

**Error**

- Download wasm files. Please check your network and firwall.
- Black or White Page
- High jitter and packet loss
- Audio and Video loss
- Meeting abrupt failure

**Which version?**  
WebSDK 1.7.10

**Screenshots**

 ![屏幕快照 2020-08-20 21.23.55](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/a/ad0585d62bb2da63313e69009a8c31bdcc043650.png)

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

- Browser:Chrome

**Additional context**  
Add any other context about the problem here.

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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:** [August 24, 2020, 9:48pm UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793/2 "2020-08-24T21:48:31Z")

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Hey @guiltdriver,

Are you using the China CDN?

> **[Integrate SDK - Getting Started - Web - Native SDKs - Zoom Software...](https://marketplace.zoom.us/docs/sdk/native-sdks/web/getting-started/integrate#cdn)**
>
> Integrate SDK
> 
> The Web SDK can be imported locally into an existing Node.js app through an npm package, or into any HTML5 project through a CDN (content...

Thanks,  
Tommy

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<div class="post-metadata">

**Author:** ![guiltdriver](https://avatars.discourse-cdn.com/v4/letter/g/5f9b8f/32.png) [@guiltdriver](https://devforum.zoom.us/u/guiltdriver)\
**Post date:** [August 25, 2020, 3:55am UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793/3 "2020-08-25T03:55:41Z")

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Hey @tommy,

We copy all JS and CSS files in the CDN links to local project.  
We found that the reason why the network is slow is to load three wasm file below:

My ip address: 124.65.225.138

 ![image](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/c/cacec5ce2394614626e3018f272cba16718ada6e.png)

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<div class="post-metadata">

**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:** [August 26, 2020, 7:27pm UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793/4 "2020-08-26T19:27:23Z")

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Hey @guiltdriver,

Have you provided the China CDN for the wasm files?

```auto
// In China use jssdk.zoomus.cn:
ZoomMtg.setZoomJSLib('https://jssdk.zoomus.cn/1.8.0/lib', '/av'); 

```

Thanks,  
Tommy

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<div class="post-metadata">

**Author:** ![guiltdriver](https://avatars.discourse-cdn.com/v4/letter/g/5f9b8f/32.png) [@guiltdriver](https://devforum.zoom.us/u/guiltdriver)\
**Post date:** [August 27, 2020, 2:54am UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793/5 "2020-08-27T02:54:07Z")

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@tommy Tkx! But the users of our website are from all over the world, not just in China, is there a more general solution?

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<div class="post-metadata">

**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:** [August 27, 2020, 10:59pm UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793/6 "2020-08-27T22:59:43Z")

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Hey @guiltdriver,

Are you able to detect where they are located and supply the respective CDN? If not, please use the Global CDN.

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:** [September 27, 2020, 8:59am UTC](https://devforum.zoom.us/t/guests-from-china-cannot-join-a-meeting/27793/7 "2020-09-27T08:59:44Z")

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Closed on September 27, 2020, 8:59am UTC

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