Some people facing Problem when they are assigning a certificate to the UM-Service. the error is like this
To solve this problem it’s really easy if you didn’t get it from the Error
– In EMC, go to Server Configuration and Click on “Unified Messaging Server”, then Right Click your UM-Server and select Properties.
– Go to “UM Settings” Tap.
– in the “Startup Mode” drop menu select “TLS”
– Click Apply then Ok.
This Should be enough to solve your Problem 🙂