By default, Adobe Reader DC pummels you with all kinds of offers for trial versions and cloud accounts, which can be annoying for yourself and your users. Luckily, it can be turned off through a few well-placed registry keys, as described in the Enterprise Toolkit.

Create the following key(s):
• HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown\cIPM
• HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown\cIPM (for 32-bit app on 64-bit Windows)
1. Create these DWORD-values and set them to zero:
   • bDontShowMsgWhenViewingDoc (DWORD) = 0
   • bShowMsgAtLaunch (DWORD) = 0
   • bAllowUserToChangeMsgPrefs (DWORD) = 0

Note that the value for bDontShowMsgWhenViewingDoc is a bit counter-intuitive, but its value does need to be 0 and not 1.