Silently enable thumbnail preview for users

Hi!

I am currently working to deploy Adobe Reader DC to all of our users. I am wondering if it is possible to auto enable thumbnail during the installation.

I am using the customization wizard, but could not find an option to enable that, just disable for the users..

I have tried to use registry to enable it, but it does not seem to work:

[HKEY_CLASSES_ROOT\.pdf\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}]

@="{DC6EFB56-9CFA-464D-8880-44885D7DC193}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PreviewHandlers]

"{DC6EFB56-9CFA-464D-8880-44885D7DC193}"="Adobe PDF Preview Handler for Vista"

Only work when I manually go in the general settings and enable it.

Thanks!