How do you get Java to work with Vista? Unfortunately, Vista requires you to jump through a few extra hoops to get Java working on your system. If you're having trouble getting Java applets and applications to run under Vista, try these options:
Do You Have the Newest Version of Java?
Windows Vista has known compatibility issues with some earlier versions of Java. One of the easiest ways you can get Java to work with Vista is to make sure you're running the most updated version of Java. How do you know if you have the latest version of Java? Go to http://www.java.com, and click on the "Do I have Java?" link. The Web site performs a quick analysis of your system, and tells you if you have the latest version of Java installed.
If you do, then you should be good to go with Microsoft Vista. If you don't, then you should follow the on-screen prompts to download and install the latest version of Java.
Remove Old Versions of Java
When you install new versions of Java, the Java installer doesn't remove older versions. This can cause software conflicts under Vista. To remove the old versions of Java, go to the Start Menu and then to the Control Panel. Select the Uninstall a Programoption. When the list populates, find your old versions of Java and click on their names. Click Uninstall at the top of the window, and follow system prompts to remove older versions of Java.
When you have successfully uninstalled all prior versions of Java, you should have only the current version left in your Add/Remove Software screen. While the system does not prompt you to restart after removing prior Java versions, a restart is a good idea to ensure there are no conflicts in your system.
Update Your Browser
Some versions of Mozilla Firefox have issues running Java under Windows Vista. To resolve potential problems, make sure you're using the most up-to-date version of your browser. In Mozilla Firefox, go to the Help menu and click Check for Updates. Follow the on-screen prompts to install any updates, then restart your browser. Internet Explorer updates are handled as part of your Windows Update process.
x64 Browsers Are a Problem
If you're using an x64 version of Windows Vista and an x64 browser, you may have issues with some versions of Java. A few Java versions work fine in x32 browsers, but have code issues with x64 browsers. If you've got the most updated version of Java and your browser, but you still can't get Java to work in your x64 browser, try using a 32-bit browser.
If you need to use an x64 browser, try installing an earlier version of Java and removing more recent Java updates until you find code that works with your x64 browser. Keep in mind, though, that without the most recent version of Java, some programs or applications may not run.
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