6 Replies Latest reply on Jun 19, 2017 3:39 AM by HonzaB

    Digital Signature Error

    HonzaB

      ACROBAT DC on MacOS

       

      If we try to add a digital signature to a PDF document, we are getting the following error message: "Selected permission for signing is not valid." [The message was translated from Czech.] Can anyone suggest what to do?

        • 1. Re: Digital Signature Error
          Karl Heinz Kremer Adobe Community Professional

          Is the document protected? You can find out by opening the document's properties (Cmd-D) and then selecting the Security tab. Are there any limitations listed?

          • 2. Re: Digital Signature Error
            HonzaB Level 1

            I do not think the document is protected. On the tab you suggest, there is Protection method: "no protection". The only limitations are: Document changes and Document arrangement which are both set to "not allowed". Other options (including "Signing") are set to "allowed".

            • 3. Re: Digital Signature Error
              Karl Heinz Kremer Adobe Community Professional

              Do you already have a signature field in the document, or are you trying to add one? How exactly are you adding your signature?

              • 4. Re: Digital Signature Error
                HonzaB Level 1

                We do the following:

                1. From menyu above the open document we click "Sign digitally". A blue field appears on top of the document to be positioned to a desired place - we do so.

                2. A pop-up window "Sign with digital ID" opens with our "Digital identifier of a key chain" option selceted. We click "Continue".

                3. Another pop-up "Sign as OUR NAME" with a date-time stamp opens. We leave "Lock the document after signing" unselected and click "Sign".

                4. A prompt for saving the "signed" documnt opens and when we click "Save", the initially mentioned error appears.

                 

                NOTE: The document has already been signed digitally by our counterparty. We need to add our signature and send it back to them.

                • 5. Re: Digital Signature Error
                  HonzaB Level 1

                  Additiona information: When we try the same procedure in a Windows PC now (with our digital signature designated for the PC platform) everything goes fine and it is possible to sign the document there. But we need to be able to sign the document on a certain date on our Mac laptop when we are away from our office.

                  • 6. Re: Digital Signature Error
                    HonzaB Level 1

                    We have solved the issue. It was found out that the certificate in the Mac key chain was incorrect. After replacing it, everything worked fine. Thank you for your assistance, anyway.