Adobe digital editions: disable automatic upgrade

The national library of Luxembourg works in a managed environment and applications are pushed from SCCM to all the users (staff members and public PC’s).

Users do not have the rights to download/install any new software.

Updates are handled centrally and are installed bi-monthly.

We installed Adobe digital editions (version 4.5.126523) to manage the load of ebooks and found no way to disable the automatic update process.

Please let me know if this can be done and how.

BR

Carlo Blum