Thanks @tommy. Disabling PMI does solve this problem, however, it is not the solution I am hoping for. This user is a customer of ours and in my testing using my own account, then PMI is disabled in my Zoom account I can still create meetings via your API with use_pmi=true. The setting is just ignored by Zoom. We seem to get two errors for this particular user, one is the above mentioned 404, the other is the “Invalid Parameters” API response. However, I am unable to recreate this error on my own test account, even when use_pmi is disabled and admin locked. Any idea why it is only a problem for this one user?