July 17, 2014, 08:04:19 am
I am advised that as per my earlier post, silent/verysilent is the only options. Other deployment tools and possible settings for those are of course outside of our control.
To confirm, the installer is Inno Setup.
If the deployment tool does not monitor the Windows messages from the setup application to Windows so you can be advised when the setup opens the Install Completion window for a user, then my only other idea would be to maybe do it per time, say allow a good 20 minutes per workstation.