Applies to: Exchange Server 2010

Topic Last Modified: 2011-03-19

Use the Disable-UMServer cmdlet to set the status of a Unified Messaging (UM) server to disabled. This prevents the Unified Messaging server from processing UM calls.

Disable-UMServer -Identity <UMServerIdParameter> [-Confirm [<SwitchParameter>]] [-DomainController <Fqdn>] [-Immediate <$true | $false>] [-WhatIf [<SwitchParameter>]]

Parameter Required Type Description




The Identity parameter specifies the identifier for the Unified Messaging server being disabled. This is the directory object ID for the UM server.




The Confirm switch causes the command to pause processing and requires you to acknowledge what the command will do before processing continues. You don't have to specify a value with the Confirm switch.




The DomainController parameter specifies the fully qualified domain name (FQDN) of the domain controller that writes this configuration change to Active Directory.




The Immediate parameter specifies whether the Unified Messaging server drops all current calls or enables current calls to finish. If this parameter is set to $true, all calls that are currently connected are disconnected.




The WhatIf switch instructs the command to simulate the actions that it would take on the object. By using the WhatIf switch, you can view what changes would occur without having to apply any of those changes. You don't have to specify a value with the WhatIf switch.

The Disable-UMServer cmdlet sets the status of a Unified Messaging server. A UM server has a logical status variable controlled using the enable and disable cmdlets. A UM server won't process any new calls unless it's in the enabled state. With this status variable, you can start or stop call processing on a UM server so the UM server can be brought online or taken offline in a controlled way.

After this task is completed, the UM server can no longer:

  • Answer any incoming calls
  • Respond to Play on Phone requests from a Client Access server
  • Be used to manage UM-enabled mailboxes
  • Be queried when a diagnostic task is used

You need to be assigned permissions before you can run this cmdlet. Although all parameters for this cmdlet are listed in this topic, you may not have access to some parameters if they're not included in the permissions assigned to you. To see what permissions you need, see the "UM server" entry in the Unified Messaging Permissions topic.

Error Description



Exceptions Description



This example disables Unified Messaging on the Unified Messaging server named MyUMServer but doesn't disconnect calls that are being processed.

Disable-UMServer -Identity MyUMServer

This example disables Unified Messaging on the Unified Messaging server named MyUMServer and disconnects all calls being processed.

Disable-UMServer -Identity MyUMServer -Immediate $true