Why does the application appear to freeze when encrypting long files?
Many applications, notably some anti-virus services, which do not allow you to do anything with the application while installing new data files. This is to prevent any of a number of unsatisfactory outcomes including a half-updated database which appears OK. PPT adopts the same policy. If you wish to encrypt very large files you are able to do so but you must be assured that the outcome is a guaranteed secure result. You will be able to use other PC applications while PTP operates although the PTP window will not re-paint until the function is complete.
