Suppress Acrobat DC Sign In (Already successfully licensed for imaged deployment)

I'm working on a Citrix XenDesktop deployment with Windows 10, both persistent and non-persistent desktops.

I've followed the instructions listed here - Common Deployment Options and Methods — Enterprise Administration Guide to serialize my master images, and that works fine. I run the APTEE, generate the XML and serialize my masters. All works successfully, no errors in the log. The original install was done using a MSI transform from the customization wizard that disables cloud features and sets some program defaults. Grant offline exception is also in there.

The issue comes in when I deploy the images. Even though the master is serialized, when a user launches DC for the first time it prompts them for a sign in. Here is where it gets interesting, although it prompts for a sign in, if you cancel out of the popup the program runs fine. Close and relaunch Acrobat and it opens as it should, no sign in prompt. This happens for both my persistent and non-persistent images.

I looked through the logs (oobelib in %temp%), and it looks like on first launch (for every user) Acrobat is doing something like this:

• Acrobat checks the licensing, sees that it's not licensed
• Displays the sign in prompt
• Meanwhile in the background it continues the license check
• Eventually (after about 15 - 20 seconds) it sees that it's licensed and reports back all good
• But never gets rid of the sign in prompt

I could let this go for my staff using persistent desktops by just telling them to close the prompt on first logon, but not for my student labs.

Has anyone ever seen this behavior before? Is there a way around this?