# CDN Not working **URL:** \ **Category:** Web\ **Created:** [May 27, 2020, 1:55pm UTC](https://devforum.zoom.us/t/cdn-not-working/19248 "2020-05-27T13:55:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![moi12\_fre](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/moi12_fre/32/9316_2.png) [@moi12\_fre](https://devforum.zoom.us/u/moi12_fre)\ **Post date:** [May 27, 2020, 1:55pm UTC](https://devforum.zoom.us/t/cdn-not-working/19248/1 "2020-05-27T13:55:26Z")
**Description** Hi, i’m having a issue with the [https://github.com/zoom/sample-app-web](https://github.com/zoom/sample-app-web), especificlly the CDN example, y just copy/paste the folder and its just not working, when i hit the join button, a modal with a message of ‘Invalid parameters’ shows up. **Error** Invalid parameter. **Which version?** I’m using the [https://github.com/zoom/sample-app-web](https://github.com/zoom/sample-app-web), CDN folder **To Reproduce(If applicable)** Steps to reproduce the behavior: 1. Go to ‘fill all the inputs’ 2. Click on ‘join’ 3. See error **Screenshots** ![zoom issue](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/e/e21f3dd44675eca324c05e3fc4ede6eda573f082.png) **Smartphone (please complete the following information):** - Device: HP Laptop - OS: Windwos - Version: 10 - Browser: Chrome ---
**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:** [June 2, 2020, 9:17pm UTC](https://devforum.zoom.us/t/cdn-not-working/19248/2 "2020-06-02T21:17:50Z")
Hey @moi12_fre, Make sure you are using a real meeting ID of a meeting that has started. If you are still seeing this issue, please email this thread and the meetingID to [developersupport@zoom.us](mailto:developersupport@zoom.us) so we can further assist. Thanks, Tommy ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 9:48pm UTC](https://devforum.zoom.us/t/cdn-not-working/19248/3 "2020-08-21T21:48:42Z")