Description
In enterprise environments it is often required to provide some kind of health check application to check the pre-requisites (i.e. installed apps and versions) on client machines. This provides an automated way of checking that the client machine is correctly setup for use in business workflows that rely on certain installed applications such as Adobe Acrobat/Reader.
Solution
You can use Javascript to detect and read the Adobe Acrobat/Reader browser plugin version:
http://stackoverflow.com/questions/4122061/javascript-detect-adobe-reader-plugin-for-browser
You can use the Windows GUID from the Registry or the MSI API to read the Reader client version:
Acrobat_Enterprise_Administration
reference: (183022625)

