A couple of cases have been reported of Macs stuck on ‘Performing final installation tasks screen’ and unlike the original KB article issue, they have successfully bound to the AD.

In these cases the issue was caused by the Jamf client if the iMacs were imaged before the Casper server was upgraded and then re-imaged after. The solution to this is to locally remove the ‘Performing final installation tasks screen’, delete the computer object from the JSS and the AD and re-image.

The KB article KB0010990  has been updated to include this.