Issue:

On certain versions of Windows, if you open the Java applet from Control Panel, and navigate to the Update tab and uncheck "Check for Updates Automatically", the setting will not be retained after clicking Ok or Apply and OK.

Resolution:

This is due to the Java Control Panel must be run by a user as an administrator for those settings to be maintained.  You can run the applet as an administrator as follows.

For 64bit Windows Operating systems, navigate to C:\program files (x86)\java\jre6\bin\.  Right Click on javacpl file and select run as administrator.  Uncheck the Check for Updates Automatically and Click ok.

For 32bit Windows Operating systems, navigate to C:\program files\java\jre6\bin\.  Right Click on javacpl file and select run as administrator.  Uncheck the Check for Updates Automatically and Click ok.

This will prevent client machines from automatically updating Java JRE updates which may be incompatible with certain Avocent Appliances and software.  Please check the release notes for your avocent product to see what versions of Java are supported by the product.