During the PGP Desktop enrollment, when prompted to enter the passphrase for your key, the passphrase is not accepted and the PGP Enrollment Assistant stops and enrollment does not continue.
This issue occurs on PGP Desktop 9.9.0 clients when the user policy is configured to automatically encrypt the disk at enrollment.
To resolve this issue, you must delete the PGP preferences from the system and recreate the PGP stamp.
Note: Another method that works as opposed to step 2 is to use an echo method in a terminal:
NOTE: If your disk not encrypted, it is recommended to delete the user from the Users list on PGP Universal Server.