Just had an issue where some of the MiCollab clients could not see their voicemails in the visual voice window.
I knew I had it set correctly as all accounts were using same licenses and FCOS
The client icon would change in the system tray and a tape reel icon would appear in the top right hand of the client but know message in the window
Besides this issue the client worked fine
What I eventually found out was that all clients that were working had Windows Media Player installed. WMP.
I saw in the release notes that it is a pre-requisite
The “N” version of windows does not have MWP installed in default but I believe you can add it on manually
The version the customer had was “Enterprise” but it had no WMP. May be a custom install image was used.