Bug on API-join with userID-Parameter on BBB 3.x?

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Stefan B.

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Sep 4, 2025, 7:21:09 AM (yesterday) Sep 4

to BigBlueButton-dev

Hello, we have developed a web application in which users can, among other things, create and join meetings via the BBB API. Since we now also need to support BBB 3.0 servers, we had to make a few adjustments. However, joining no longer worked, even though according to the API reference everything was set up correctly.

The issue was that the user did not get the client displayed properly. They always remained stuck on the loading screen with the three animated dots. According to the server logs and responses, however, everything seemed fine...

After a lot of trial and error, I removed (or shortened) the userID parameter, and suddenly it worked. Up to that point, I had been using a UUID with 58 characters. I have now shortened it to 40, and joining works again.

Could this be a bug in the system/API? I couldn’t find any documentation stating that the userID length is restricted.