1.10 Troubleshooting ZENworks Control Center

An HTTP request is not redirected to HTTPS if IIS is running on the Primary Server

Source: ZENworks 11; ZENworks Control Center.
Explanation: During installation, the setup checks to see if the default HTTP port (80) and HTTPS port (443) are in use. If the ports are in use by another application (such as IIS), you are prompted to use alternative ports. In this case, you must access ZENworks Control Center via the port it is using and not access IIS.
Action: Although http://Primary_Server_IP_address works if ZENworks Control Center is using port 80, http://Primary_Server_IP_address:### (where ### is the port Tomcat is using) always works.

ZENworks Control Center throws a java.lang.NoClassDefFoundError Exception

Source: ZENworks 11; ZENworks Control Center.
Explanation: When you use ZENworks Control Center to perform an operation, you might encounter a java.lang.NoClassDefFoundError exception.
Action: Restart the Novell ZENworks Server service:

On Windows: Do the following:

  1. On the Windows desktop, click Start > Settings > Control Panel.

  2. Double-click Administrative Tools > Services.

  3. Restart Novell ZENworks Server.

On Linux: At the console prompt, enter /etc/init.d/novell-zenserver restart.

Opening links in a new tab or new window of ZENworks Control Center might fail to display the page

Source: ZENworks 11; ZENworks Control Center.
Explanation: While browsing ZENworks Control Center, if you choose to open a link in a new tab or a new window, the page might fail to display.
Action: Open the link in the same window.

Logging in to ZENworks Control Center or navigating within ZENworks Control Center by using Firefox 3.x might display a blank page

Source: ZENworks 11; ZENworks Control Center.
Explanation: If you are accessing ZENworks Control Center across the network by using Firefox 3.x, you might see a blank page when you log in to ZENworks Control Center or navigate within ZENworks Control Center.
Action: Do one of the following:
  • Use the Firefox Web browser to open about:config, then change the value of browser.cache.memory.enable to False.

  • Refresh the Web browser to reload the ZENworks Control Center page every time ZCC displays a blank page.

  • Use any other ZENworks 11 supported Web browser to access ZENworks Control Center.

    For more information about the supported Web browsers, see Administration Browser Requirements in the ZENworks 11 Server Installation Guide.