I have Unified Messaging setup between Unity Connection 8.6(2) and Exchange 2010 SP1. When a voicemail is left in the subscribers UC box, it is delivered to exchange and the MWI light comes on as it should. However, when the users views the email in Outlook, and it becomes read, the MWI light stays on. It seems as if exchange is unable to communicate to UC that the message as been read or even deleted.
I am not sure where to look next to see why exchange won't synchronize with UC.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.