Windows – Control panel applet for Java is missing – How to get it back

javawindows 7

Update: This is obviously not a duplicate of the issue where the Java applet is visible in the Control Panel for the simple reason that the applet in that question actually shows up in the control panel.

The control panel applet for Java is missing on my Windows 7 Pro (64-bit).

I have Java CPL (control panel item) installed in "Program Files" and "Program-Files" (this second one does not seem to be an actual separate directory however but a link to maybe the first one?)

The Java was installed by myself (I am the only user on this computer).

How can I get the control panel item show up in the control panel, so that I can run it with admin rights?

Best Answer

The only solution that I have come up with in a similar situation: to uninstall & re-install Java.

It's possible that this issue has something to do with what happens when Java update loads a new version to your system. I am saying this because Java by default tends to install itself into directories where the directory name has the version number. So a change in version number => changes the installation directory => may have an effect on some paths were system expects to find Java.

I am not sure if this is the cause however but so as to remove that possibility, when I re-installed Java I created a custom directory C:\Program Files\Java\JDK (this was the 64-bit version; a 32-bit version should have been placed in C:\Program Files (x86)) and directed the installer to put everything in that directory (instead of its default which would have been something like: C:\Program Files\Java\jdk_1.8.0.66).

If you are installing just the JRE then the custom path could be something like C:\Program Files\Java\JRE (instead of the default C:\Program Files\Java\jre8).

When you uninstall Java, make sure that:

The Java directories (in either C:\Program Files (x86)\Java or C:\Program Files\Java) are actually deleted by the uninstaller. If not, it's better to delete them manually (since you will be re-installing them anyway, this should be fine).
Any environment variables (e.g. JAVA_HOME, PATH, etc) that refer to the old location actually point to the new location

Related Solutions

Windows 7 – Java Control Panel Missing Update Tab

You may be seeing a 32bit vs 64bit jre conflict in the control panel.

On a new HP laptop I have (win7 64bit), I ended up with both the 64bit and 32bit JRE installed, without actually doing anything. Shortly after starting to use the system, I accepted a prompt to update java. Later I noticed that the java version in the control panel was still old, however, the java version in ie8 was the newer version. You can see the version in your browser by browsing to about:plugins (in mozilla, chrome) or:

http://java.com/en/download/testjava.jsp
From a 32bit cmd.exe, java -version indicated the new version.
From a 64bit cmd.exe, java -version indicated the old version (and 64-bit).

When I ran the 64bit version of ie8 (normally you are running the 32bit version), and visited the above testjava link, it indicated I had an out of date version and did a choke, die when I tested it.

The 32bit version was doing the auto-update (via a background process) run from: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run SunJavaUpdateSched "C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe"

So, it seems like the control panel was showing the 64bit of the jre, which was not auto-updating and the 32bit version of the jre was auto-updating. I did not see any auto-update process for the 64bit version of the jre. I will probably try and un-install the 64-bit version of the jre because my average user does not need this.

I was able to run the 32bit version of the control panel from:

C:\Program Files (x86)\Java\jre6\bin\javacpl.exe

and it did show the Update tab.

fyi: the 64-bit (old) version of the control panel was at:

C:\Program Files\Java\jre6\bin\javacpl.exe

Windows – Java control panel security options grayed out

The previous image we used allowed us to switch between "very high" and "high" in the java security pane. This fixes the issue. Currently on this new image it's grayed out, so we cannot access any of these management sites.

This is due to the current configuration of the Windows image you are using. You will have to find and locate the deployment.properties file and remove the following line from the file.

I've tried numerous solutions after some extensive googling and finding where java's settings are stored but the (windows\sun\java\deployment) folder is empty.

deployment.security.level.locked

The Java configuration deployment file can literally be located in any location on the system. You need to find the deployment.config file on the system. This file defines the location of the properties of the Java configuration. You should contact whomever created the Windows image in question for more information.

If you want to override the settings, create your own deployment.config and deployment.properties, then deploy them to C:\Windows\Sun\Java\Deployment. You could also just add the sites to the exception list.

Best Answer

Related Solutions

Windows 7 – Java Control Panel Missing Update Tab

Windows – Java control panel security options grayed out

Related Question