# Running openvidu-js-node does not work on FF

**URL:** <https://openvidu.discourse.group/t/running-openvidu-js-node-does-not-work-on-ff/2690>\
**Category:** Issues developing apps\
**Tags:** v2\
**Created:** [February 11, 2021, 12:08am UTC](https://openvidu.discourse.group/t/running-openvidu-js-node-does-not-work-on-ff/2690 "2021-02-11T00:08:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Kamal\_Bhatt](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/kamal_bhatt/32/1330_2.png) [@Kamal\_Bhatt](https://openvidu.discourse.group/u/Kamal_Bhatt)\
**Post date:** [February 11, 2021, 12:08am UTC](https://openvidu.discourse.group/t/running-openvidu-js-node-does-not-work-on-ff/2690/1 "2021-02-11T00:08:58Z")

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Hi,  
I am trying to run this example:-

[https://docs.openvidu.io/en/2.16.0/tutorials/openvidu-js-node/](https://docs.openvidu.io/en/2.16.0/tutorials/openvidu-js-node/)

It works on Chrome, but when I try to run on FF I am getting web socket connection errors:-

 ![image](https://global.discourse-cdn.com/free1/uploads/openvidu/original/2X/6/67d1df9a142528c08f74cc4f28c5d9d2abba2149.png)

I am using FF 85.0.2 and I am using Windows 10 to run the applications. I am running with node 14.14.0

Any ideas what is wrong?

Kamal.

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<div class="post-metadata">

**Author:** ![Kamal\_Bhatt](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/kamal_bhatt/32/1330_2.png) [@Kamal\_Bhatt](https://openvidu.discourse.group/u/Kamal_Bhatt)\
**Post date:** [February 11, 2021, 12:54am UTC](https://openvidu.discourse.group/t/running-openvidu-js-node-does-not-work-on-ff/2690/2 "2021-02-11T00:54:22Z")

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Found the issue, you need to separately hit [https://localhost:4443](https://localhost:4443). This will allow you to save the exception. It would be nice if this information was put in the FAQ.

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<div class="post-metadata">

**Author:** ![micael.gallego](https://yyz2.discourse-cdn.com/free1/user_avatar/openvidu.discourse.group/micael.gallego/32/2_2.png) [@micael.gallego](https://openvidu.discourse.group/u/micael.gallego)\
**Post date:** [February 17, 2021, 10:47pm UTC](https://openvidu.discourse.group/t/running-openvidu-js-node-does-not-work-on-ff/2690/3 "2021-02-17T22:47:47Z")

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Thank you for reporting.

We will clarify that in the documentation.