I have Acrobat Pro DC. The sanitize and redaction features no longer work as they did. I used to be able to redact and sanitize data, and save over the open document. Now I can do neither. The error message I receive for sanitization is: The document could not be sanitized because of errors during the sanitization process. For the cost of this software it should work every time. I can purchase other products at this cost that will. Any suggestions on how to remedy the issue?
Have you figured this out, I have the same issue
I received the same error message on my secured document – this document had been created to be password protected.
I've now removed the security password and have now successfully sanitised the document.
Not sure if this helps?