Summary
We embed the Zoom Meeting SDK for Web (Client View) in our learning platform. When the meeting host starts a whiteboard, participants see “Connection error” and the whiteboard does not load. The meeting itself (join, audio, video, chat) works; only interactive whiteboard fails.
This worked in production, QA, and local until approximately [DATE – e.g. 2 days ago]. It then stopped working at the same time across all environments, including QA which does not use our production ingress. We do not believe this is caused by our ingress/CSP changes alone.
App / SDK details
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Product: Meeting SDK for Web – Client View (ZoomMtg.init / ZoomMtg.join)
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SDK version: @zoom/meetingsdk [e.g. 6.0.2] (loaded from https://source.zoom.us/[version]/lib/)
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Join type: Participant (role: 0 in JWT signature)
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Cross-account meetings: We use OBF (On Behalf Of) token when joining meetings hosted outside our SDK app account (if applicable)
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Host: Starts whiteboard from Zoom client / host role; students join via embedded SDK