Adobe DC - Auto Update > Prompting for Credentials

We've installed the Dutch Version 2019.008.20071 (corporate).

Set the following keys:

bUpdater HKLM\SOFTWARE\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown = 1

Mode HKLM\SOFTWARE\WOW6432Node\Adobe\Adobe ARM\Legacy\Reader\{AC76BA86-7AD7-1043-7B44-AC0F074E4100} = 3

Check HKLM\SOFTWARE\WOW6432Node\Adobe\Adobe ARM\Legacy\Reader\{AC76BA86-7AD7-1043-7B44-AC0F074E4100} = 3

ICheck HKLM\SOFTWARE\WOW6432Node\Adobe\Adobe ARM\1.0\ARM = 3

ICheckReader HKLM\SOFTWARE\WOW6432Node\Adobe\Adobe ARM\1.0\ARM = 3

Automatic Updates are being pulled but we're being prompted for Security Credentials if people click the prompt theyre getting if they want to update their Adobe. Seems Adobe DC doesn't silently install it's automatic updates.

Any ideas what i should adjust?