Zoom Web Video SDK: WebSocket error to wss://wc/media/undefined, but meeting still works

Video SDK Web
1

Description

We’re seeing repeated WebSocket connection errors in the browser console (screenshot attached) when joining a meeting using Zoom Web Video SDK. However, both the meeting and recording functionalities currently appear unaffected.

We would like to understand:

  • What these errors mean (specifically: ERR_NAME_NOT_RESOLVED when connecting to wss://wc/media/undefined?...)
  • Whether this could indicate a potential issue that might affect meeting or media performance in the future.

Browser Console Error


WebSocket connection to 'wss\://wc/media/undefined?type=v\&cid=...\&mode=2' failed: Error in connection establishment: net::ERR\_NAME\_NOT\_RESOLVED

Which SDK version?

Zoom Web Video SDK version: 2.2.5
Note: This issue did not occur in previous SDK versions — we started seeing it only after upgrading to 2.2.5.

To Reproduce

  1. Click join meeting and navigated to Preview screen
  2. Fill in device settings (camera, mic, speaker)
  3. Observe the browser console before clicking “Join” button

Device (please complete the following information):

  • Device: Windows PC
  • OS: Windows 11 Pro 24H2
  • Browser: Edge
  • Browser Version:

Additional context

The domain wss://wc appears malformed — is this a placeholder or a known fallback? We want to confirm whether this is expected SDK behavior or a misconfiguration on our side.

2

Hey @Thong1

Thanks for your feedback.

This doesn’t affect functionality. As you mentioned, no media connection is established with the server on the preview page.

We’ll optimize this error message in a future version.

Thanks
Vic

1 Like
3

Hi @vic.yang
Thanks for the clarification and quick response.
Glad to know it doesn’t affect functionality. Looking forward to the optimized error message in a future release.
Appreciate your support!
Best regards,
@Thong1