Acrobat Update November 2020
with new Preflight signature

Adobe released planned updates for Acrobat DC, Acrobat 2020 and Acrobat 2017. (No update for Acrobat 2015!) There are three separate installers:

The updates can also be installed using the Acrobat menu Help > Check for Updates….

According to Adobe there are the following new features due to the removal of Flash as well as some cosmetic changes in MacOS and accessibility improvements:


  • Native user interface for Form response files
  • Options to insert Flash content removed from the PDFMaker menu
  • Enhancements to dialog boxes on MacOS
  • Accessibility enhancements
  • Performance improvements

For preflight users who use the function for embedding the preflight audit trail, the (undocumented) replacement of the expired preflight signature (expired on 11/6/2020) with a new preflight signature (valid until 10/22/2025) is important.

(For users of older Acrobat versions, I have published instructions on how to manually replace the expired preflight signature…)

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