Exchange Unified Messaging Doesn’t Start (No Certificate Found)

So, you have updated your SSL certificates in Exchange 2010 to comply with (insert corporate policy here).  All seems well until you receive a frantic call: “Voice Mail is down!”.

A quick search of the event viewer turns up:

The Microsoft Exchange Unified Messaging service was unable to start. More information: “Microsoft.Exchange.UM.UMService.UMServiceException: No certificate was found using the thumbprint ” specified in the UMCertificateThumbprint property of the UMServer object.
   at Microsoft.Exchange. UM.UMService.UMConnectionManagerHelper.TLSConnectionManager.Initialize()
   at Microsoft.Exchange.UM.UMService.UMService.InitializeConnectionManager()
   at Microsoft.Exchange.UM.UMService.UMService.StartService()
   at Microsoft.Exchange.UM.UMService.UMService.OnStartInternal(String[] args)”

 

You cradle your head in your hands and begin to weep softly.

Fear not!

The Solution

  1. Launch Exchange Management Console from the server hosting the Unified Messaging Role
    Important: Remember to launch with UAC elevated permissions!
  2. Expand and click on Server Configuration
  3. From the server list in the center pane, select the server hosting the Unified Messaging Role
  4. In the lower center pane, you’ll very likely notice the new SSL certificate is not assigned to any services
    image
  5. Right click on the certificate and select Assign Services to Certificate
  6. In the wizard, check the Unified Messaging (UM) service
    image
  7. Finish the wizard and dry your tears!

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