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Firefox blocks the Java plugin because of security issues. Learn how to use Java if necessary or fix "Application Blocked by Security Settings" error messages.

Firefox has stopped {for not fx26}some versions of {/for}the Java plugin from running automatically because of security issues. However, you can still use Java on trusted sites. We'll show you how. *For more information about Java, see the article [[Use the Java plugin to view interactive content on websites]]. __TOC__ {warning}'''Warning:''' You should only activate Java on sites you trust.{/warning} {for not fx24} =Activate Java once= When you see the "Click here to activate" message, simply click it to load the Java content normally.<br><br>[[Image:Activate Java]] {note}'''Note:''' The next time you visit the site or any other that uses Java you will see this message again.{/note} =Always activate Java for a site= If you have a trusted site that uses Java and you need to use that site often, you can make Java work normally on just that website. #Click the plugin icon in the address bar and a message window will open. #At the bottom of the message window, click the {menu Activate All Plugins} dropdown menu and choose {menu Always activate plugins for this site}.<br><br>[[Image:Always activate Java]]<br> Now, whenever you visit this site, the plugin will automatically run and you won't get the "Click to activate" message. {/for} {for fx24} =Activate Java once= When you see the "Activate Java" message, simply click it to load the Java content normally.<br><br>[[Image:Fx24-JavaActivate]]<br> Alternatively, if there is no visible area to activate Java content in the page, look for the plugin icon in the address bar. Click it and, in the message panel that opens, choose {menu Allow Now} to enable Java content temporarily.<br><br>[[Image:Fx24-JavaAllowNow]]<br> {note}'''Note:''' The next time you visit the site or any other that uses Java you will see this message again.{/note} =Always activate Java for a site= If you have a trusted site that uses Java and you need to use that site often, you can make Java work normally on just that website. #Click the plugin icon in the address bar and a message panel will open. #In the message panel, click {menu Allow and Remember}.<br><br>[[Image:Fx24-JavaAllowRemember]]<br> Now, whenever you visit this site, the plugin will automatically run and you won't get the "Click to activate" message.{/for} =Java security prompts= After activating Java for a site you may see a security prompt, asking you to confirm that you want to run Java, or a message such as "Application Blocked by Security Settings", with no option to run Java. These security prompts and messages come from Java itself, not from Firefox, and depend on the website and your security settings in the [http://www.java.com/en/download/help/jcp_security.xml#control%20panel Java Control Panel]. For more information, see the Java Help pages [http://www.java.com/en/download/help/appsecuritydialogs.xml What should I do when I see a security prompt from Java?] and [http://www.java.com/en/download/help/java_blocked.xml Why are Java applications blocked by your security settings with the latest Java?] =Sites report that Java is disabled or cannot be detected= If websites report that the Java plugin is not installed, cannot be detected, or is disabled in the browser, you won't be able to activate Java. Make sure that the Java plugin has not been disabled in Firefox. You'll need to enable the Java plugin in the Firefox Add-ons manager before you can activate Java on trusted sites. See [[Use the Java plugin to view interactive content on websites#w_enabling-java| Enabling Java]] for help with that. [[Template:ShareArticle|link=http://mzl.la/VYiQ64]]