BBBerror

for BigBlueButton

BBB Toolkit catalog

Code 1101

Category: Screen share

Message shown in BigBlueButton

Code {errorCode}. Try sharing the screen again.

What it means

Screen sharing lost its signalling WebSocket to the media server (bbb-webrtc-sfu), for the presenter or a viewer.

Likely causes

  • Brief network drop
  • Tab backgrounded
  • WebSocket proxy timeout

What to do

First, check who is affected.

  1. Only one or a few users: most likely a problem on the user's side, so follow the Student and Teacher steps.
  2. Everyone in one room: check that room/meeting (settings, meeting ended or recreated, room limits).
  3. Everyone in every room: most likely a server problem, so go to the Admin/server steps.

Students

Keep the meeting tab focused and try sharing again. Click Share screen again. Try another network (for example a mobile hotspot) to check whether your current network blocks the connection.

Teachers

Pause screen share and restart; ask IT if disconnects are frequent.

Server admins

Increase proxy read timeouts for WSS to bbb-webrtc-sfu. Check that nginx runs and its config is valid (sudo nginx -t, /var/log/nginx/error.log). Run sudo bbb-conf --clean, then sudo bbb-conf --watch while reproducing the error to see log errors live.

Screenshot (coming soon)

Upstream source

  • v3.0.x-release · bigbluebutton-html5/imports/api/screenshare/client/bridge/errors.js:23

Dataset ref: v3.0.x-release

Browser check: Coming soonChrome extension: Coming soon