We have solved this issue by changing some registry keys.  For our purposed we needed to change the following registry keys to the settings below. "HKLM\SOFTWARE\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown   -     iProtectedView” to “1”. “HKLM\SOFTWARE\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown   -     iFileAttachmentPerms” to “2”. “HKU\.DEFAULT\Software\Adobe\Adobe Acrobat\DC\AVGeneral   -     bFIPSMode” to “0” Specifically this key seems to be the main problem: HKLM\SOFTWARE\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown   -     iProtectedView” to “1” ... View more

We are seeing this same issue on version 18.009.20050.  Several thousand installs all with the exact same result.  Our users are not happy and we have no solution yet. ... View more