Print Production :: Preflight :: can't find the "“Acrobat Pro DC 2015 Profiles” Library. I have “2017 Release (Continuous) | Version 2017.009.20058” Any reason why it's not there?

Dov Isaacs provided the answer in the comments to this InDesignSecrets.com posting:

https://indesignsecrets.com/creating-a-different-size-print-pdf-a-workaround.php

Important Note With Regards to Preflight Library Feature:

The Preflight Library Feature was added to the Acrobat Pro DC continuous release in the Spring 2017 update.

If you updated an already existing copy of Acrobat Pro DC, your existing profiles were moved to the “Acrobat Pro DC 2015” library.

If you did a new installation of Acrobat Pro DC after the date of that update, you will not see an “Acrobat Pro DC 2015” library in Preflight.

That having been said, the Preflight fixups for scaling are also found in the “Prepress, Color and Transparency” library in the Pages section.

(Note that we are fixing the Acrobat Pro DC [continuous] updater to install a copy of the older “Acrobat Pro DC 2015” profile library if one isn’t already installed. This also fixes a problem of older GWG profiles that aren’t in the newer profile libraries!)

– Dov