How to manually remove the ZCM 10 agent

  • 3819251
  • 06-Feb-2008
  • 27-Apr-2012


Novell ZENworks 10 Configuration Management


ZCM Agent can not be uninstalled nor reinstalled.

Error as seen in the ZENPreAgent.InstallErr
ERROR: Exception During Install: The specified service already exists
Attempting Rollback.
Rollback Complete.
Exception during start: Cannot start service ZENPreAgent on computer '.'.


Download and use the "ZCM 10.2.x/10.3.x Agent Cleanup Utility" from
to clean up or remove the ZCM Agent, follow these steps:

First try to uninstall the ZCM Agent and CASA installs via add/remove programs, if that does not work.
Next go into the zenworks/bin directory and run that uninstall. This works to allow you to reinstall the client. If that fails, or leaves residual files, follow the steps below.
  1. Delete the C:\Program Files\Novell\ZENworks directory (if the ZAM or other agents are installed, you will not be able to delete this directory.)
  2. Delete the C:\Program Files\Novell\CASA directory
  3. Delete the C:\Windows\Novell directory
  4. To remove the Novell ZENworks services that may be remaining, from a command prompt run the following command: (insert the service name for "serv")
    net stop serv -u
    sc delete serv -u
  5. Run regedit and delete all instances of ZENworks and CASA (that deal with ZENworks, keep in mind if you are using other ZENworks agents.)
  6. Reboot the PC

You should now be able to install the ZCM Agent again if desired.

Additional Information

This procedure should only be attempted as a last resort, when uninstalling through add/remove programs does not work.