A voice call to user %1 failed because it is not possible to determine the user's Unified Communications (UC) policy. It ...

A voice call to user %1 failed because it is not possible to determine the user's Unified Communications (UC) policy. It is likely this problem affects other users as well. Problems with this user's policy will not be reported again for another hour.
Cause: Active Directory settings may have become corrupt.
Resolution:
Verify that the voice policy is correct or assign valid voice policy to users.

A valid queue was not specified for the queue time out destination. Queue Name: %1 Queue Id: %2 Cause: Incorrect queue time ... A valid URI was not specified for the queue overflow destination. Queue Name: %1 Queue Id: %2 Cause: Incorrect queue overflow ... A valid URI was not specified for the queue time out destination. Queue Name: %1 Queue Id: %2 Cause: Incorrect queue time ... A value of negative one is used as a the wild card that will match any received ISUP cause codes or when there are no ISUP ... A voice call to user %1 failed because it is not possible to determine the user's Unified Communications (UC) policy. It ... A WorkflowRuntime cannot be started. This can be caused by one of the following cases. 1) The service we are trying to add ... A WorkflowRuntime cannot be started. This can be caused by one of the following cases. 1) There is more than one service ... A {0} ({1}) response was received from the network and the operation failed. See the exception details for more information. ... A/V Authentication Service is not selected for Mediation Server. Connections that require firewall traversal may not be successful. ...