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Java Control Panel fails to make changes in the JavaĬonfig. Generation plugin" is enabled in the Java Control Panel. Unless you need to run in the legacy mode, make sure "New

Make sure new generation plugin is enabled. The Java Control Panel and your browser plugins/addons list. There are multiple places where Java could be disabled. Any change in the Java Runtime configuration requires theīrowser to be restarted Java is not enabled. The only way to ensure use of an older plugin is used is The JRE will always register plugin from latest JRE on the systemĪs active. There could be just one plugin registered in the browser and Latest matching plugin/webstart is always used. Likewise, the 32-bit JRE is necessary for 32-bitīrowsers. You use a 64-bit browser, then the 64-bit version of the JRE is Is required to be able to run an applet or webstart. It is not sufficient to install the Java Developer Kit.

On Windows, check the list of installed programs in the Controlħ.1.2 Common Configuration Problems There is no Java Runtime installed.

Make sure the Java Runtime Environment is installed.

Internet Explorer: Choose Tools > Manage.

Firefox: Choose Tools > Addons > Plugins.

Chrome: Type about: plugins in the location.

Reported, then the plugin is enabled and found.Ĭheck that your browser knows about the Java plugin.

If you see that the expected Java technology version is.

Click on the Verify Java version button.

If your application will not run, perform the following 7.1 Configuration Problems 7.1.1 Validation This chapter describes some problems and solutions related toĭeploying Java applications.