So it looks like you may have found the issue. Our company uses Cylance and the aomhost is quarantined there. Do I need to have IT do something to remove it from quarantine?
That should be the issue. You will need to get your IT department to restore the file from quarantine, and then restart the Zoom app after they have done that. Please get them to exclude that app from being quarantined as it is vital to the virtual background function in Zoom.
Also, once they've done that and you have virtual backgrounds running, please let me know by marking the solution on here so that we can close out this question.