Java is regularly in the news, and not for reasons it would want to be. Every other day, some zero-day Java vulnerability or the other is found, a security advisory released, and within a few days a patch is released. The latest in the news is Java 7, where Oracle released Update 11 to patch the vulnerability. This has now led to scramble among many security guru’s – many of whom are advising that it was time to disable, if not completely uninstall Java, from one’s computers.
Uninstall Java from Windows computer
To completely uninstall Java from your Windows computer, head over to your Control Panel, and from the Program and Features applet, select the Java entry and click on Uninstall. If you see more than one entry, uninstall them all one after the other.
Disable Java on Windows computer
To disable Java on your computer, open the Java applet from the Control Panel.
This will open the Java Control Panel window. Under the Security tab, you may move the slide up to Very High – Security level. Or to disable Java completely, uncheck Enable Java content in the browser. Don’t forget to click on Apply/OK.
Additionally, under the Advanced tab, you can select the option/s to Prompt user during JRE Auto-download and at other times, etc. More here on how to manage Java settings.
Disable Java plugin in IE
To disable Java plugin on Internet Explorer you can use the Add-ons manager to disable Java(tm) Plug-in 2 SSV Helper and Sun Microsystems Deployment Toolkit. But this does not actually suffice. You have to edit some registry settings too, to complete disable Java on IE.
KB2751647 has mentioned the registry settings which need to be edited, so as to completely disable the Java web plug-in in Internet Explorer. As per the KB article, can disable Java by setting kill bits for the Java CLSIDs and by setting the URL action to Disable. Based on the article I have prepared this registry fix which you can download and apply, after you have created a system restore point.
Disable Java in Firefox
To disable Java plugin in Mozilla Firefox browser, via the Firefox menu, open the Addons manager and select Plugins.
Disable all the Java entries that you see.
Disable Java in Chrome
To disable Java plugin in Google Chrome browser, type chrome://plugins and hit Enter.
Look for Java plug-in and click Disable.
Disable Java in Opera
To disable Java plugin in Opera browser, type opera:plugins in the address bar and hit Enter.
Disable all the Java entries.
Go here to see how to disable or change Java Permissions using the Windows Group Policy Editor.