Cisco Unity

Troubleshoot the Windows Product Activation Error on Unity Server

Document ID: 111311

Updated: Dec 14, 2009



This document provides information on how to troubleshoot the Event Id 1000 error about the Windows Product Activation in the Cisco Unity Application Log.



There are no specific requirements for this document.

Components Used

The information in this document is based on these software and hardware versions:

  • Cisco Unity 5.x and later which is installed on a Windows Server 2003 operating system

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.


Refer to Cisco Technical Tips Conventions for more information on document conventions.


The Windows Product Activation error with event ID 1000 is received in the event log of the Cisco Unity server. This results in the failure of the Cisco Unity server.


In order to resolve the issue, you need to restart the Kerberos Key Distribution Center service. Complete these steps:

  1. From the Cisco Unity server, go to Start > Programs > Administrative Tools > Services.

  2. In the list of services, double-click Kerberos Key Distribution Center.

    This pop-up window appears:


  3. From the Startup type list, choose Automatic. Click Apply and then click Start.

  4. Click OK.

  5. Close the services MMC snap-in.

  6. Restart the Unity server.

Related Information

Updated: Dec 14, 2009
Document ID: 111311