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Open an encrypted PDF file

To open an encrypted PDF file, do as follows.

  1. Open the email you have received.
  2. Download the PDF attachment.
  3. Open the encrypted PDF attachment, [ENCRYPTED] message.pdf. Your PDF reader opens and a password prompt appears.
  4. Enter your password. You can now read the message.


An encrypted document's password is permanent. For example to view a document that was encrypted on 12th October 2018, you must enter your password from 12th October 2018.

You can find your previous passwords in View your PDF password history