Missing the Java Control Panel on Windows Server 2008 x64

Here’s a quick note on an old mystery I faced after the installation of Java Runtime Engine 6 Update 5 on a Windows Server 2008 x64 machine. It was part of a scripted installation I was preparing for a Citrix XenApp 5 installation (prerequisite = JRE6U5). When I checked the system for a successful installation of the JRE, I could not discover the Control Panel anywhere. I wanted to make sure it was properly installed (I turned off the systray icon with the SYSTRAY=0 and WEBSTARTICON=0 arguments) and could not verify the installation by checking the presence of the icon in the notification area (turned it off during installation).

So I figured I could always check the presence of the Java Control Panel in my Windows Control Panel, but unfortunately that icon was nowhere to be found. Nor did I discover it in the 32-bit Control Panel items.

Even trying to start the Java Control Panel manually through the jpicpl32.cpl command did not work, not even after a reboot, which might trigger a better loading of all the DLLs. I was running out of ideas for a solution.

Luckily for me Google was kind enough to provide me with an answer as it lead me to Bug ID 6641731. Which made me realize it was a known bug and fortunately also came with a workaround:

A successful test of the command javaws -viewer opened the Java Cache Viewer and the Java Control Panel from which I could easily check the update and version information.


One to remember for future reference.



Esther Barthel
Solutions Architect at cognition IT

Esther has been working in different roles and functions as an IT consultant ever since she finished her Masters degree in Computer Science in 1997. She has worked as a web developer, database administrator, and server administrator until she discovered how Server-Based Computing ( SBC ) combined servers, desktops, and user experience in one solution. Esther has been specializing in virtualization solutions such as SBC, VDI, application, and server virtualization for over eight years now and is currently working as a Senior Consultant at PepperByte, where she designs and implements Citrix® solutions for both small-business and large-enterprise infrastructures scaling from 100 to 15,000 users.
In january 2014 her first book Citrix XenApp 6.5 Expert Cookbook was published by Packt Publishing.

Esther is awarded as a Citrix Technology Professional (CTP) from 2015 - 2017.
Esther is awarded as a Microsoft Most Valuable Professional (MVP) in 2017.

Esther is a Citrix Certified Expert – Virtualization (CCE-V), Citrix Certified Professional – Mobility (CCP-M), Citrix Certified Professional – Networking (CCP-N) and RES Software Certified Professional (RCP).