End of support for Acrobat/Reader XI

On October 15, 2017 Adobe discontinued the support of Adobe Acrobat XI und Adobe Reader XI. Adobe only supports during five years. That means that Adobe no longer provides technical support, including product and/or security updates, for this version of the application.

However the software can still be used!

According to my survey last year Acrobat XI is the most used Acrobat version by my readers. This is also confirmed by the feedback of the attendees of my seminars.


Adobe preflight signature has expired

On February 8th at 14:33:51 (CET) the Adobe preflight signature has expired. That’s why it is no longer possible to embed the preflight audit trail after a preflight with Acrobat Pro in a PDF:

Preflight AuditTrail Error
After embedding the preflight results the PDF is usually “sealed” with this generic signature. This allows to recognize immediately if the PDF has been altered after the embedding of the preflight audit trail which may make the results obsolete. Thanks to the signature it is even possible to undo these changes.

Unfortunately the Adobe preflight signature is only valid for 5 years. Therefore the signature has to be renewed during the life cycle of an Acrobat version. Last time the signature expired on 22.11.2012. I remember that day very well. At that time I was responsible for the prepress support at Novartis Pharma and I received the error reports from all over the world. Since embedding the preflight audit trail is mandatory for PDFs for packaging files for Novartis Pharma I had to find a solution urgently. I did found out that replacing the invalid preflight signature of Acrobat 9 and X by the newer signature of Acrobat XI solved the problem.

It took Adobe quite a while to do the same. In January 2013 updates of Acrobat 9 and X containing the Acrobat XI signature were released. This signature was valid until 8.2.2016. It was also delivered with the first versions of Acrobat DC.

But this time Adobe has reacted on time (I have pushed them a little bit). With the January update of Acrobat DC and the 11.0.14 update of Acrobat XI a new preflight signature is installed. Users of these applications only have to perform the free update. Afterwards embedding the preflight audit trail is working properly again. At least until 6.11.2020. Then the signature will expire again…

Since Adobe does not offer updates for Acrobat 9 and X anymore, users of these applications must help themselves.

Weiterlesen / ContinueAdobe preflight signature has expired

Installation of Acrobat DC and Acrobat XI on the same computer

At the launch of Acrobat DC existing installations of Acrobat XI have been removed without notice. This raised a lot of protest in the Internet.

It took quite long until Adobe offered a solution. Since the October update there is now a setting in the installer which allows to choose if existing Acrobat installations are removed or not. By default they are still removed!

For a lot of users this new setting comes too late. For them Adobe has published instructions for the re-installation of Acrobat XI. First Acrobat DC must be uninstalled. Afterwards Acrobat XI is installed. The instructions don’t mention that one has to re-install Acrobat DC afterwards (of course without the option to remove older versions!) in order to use both versions on the same computer.


Updates of Acrobat 9 only on FTP

Acrobat9-SplashscreenAdobe has removed the download links for the Acrobat 9 updates from their web pages. Possibly because Acrobat 9 is officially no longer supported.

But there are many users stilling working successfully with Acrobat 9.

Sometimes a new installation is required which means installing Acrobat 9.0.0 and all incremental updates. Unfortunately the menu Help > Check for Updates… does not always work proberly.

Fortunately one can still download the updates from the Adobe FTP server: