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How do I stop my whole laptop freezing when I use Firefox to visit a site that uses Java aplets?

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New User

How do I stop my whole laptop freezing when I use Firefox to visit a site that uses Java aplets?

For the last few weeks, whenever I've used Firefox to visit a trusted site that uses Java aplets, I've got a warning advising me to update Java. But when I check Java, it tells me I already have the most up to date version. However, as of today, whenever I visit the same trusted site my whole laptop freezes - cursor disappears, everything stops. I can't even use Restart - I have to manually disconnect the power. The same happens when I attempt to access Java via the Control Panel (to uninstall) - the moment the cursor hovers over Java, everything freezes and I have to disconnect power. I'm using Vista Home Premium SP2 32-bit. HELP!!

4 REPLIES
Mozilla Support Contributor

Re: How do I stop my whole laptop freezing when I use Firefox to visit a site that uses Java aplets?

Potentially unsafe versions of the Java plugin are "Click to Play" blocked, meaning that you have to click to activate Java for each site. See the How to allow Java on trusted sites article for more information.

Note: To make sure that your Java plugin is working, you can visit the test pages listed in the article, Use the Java plugin to view interactive content on websites. If an "Activate Java" message box appears, click inside the box to activate the Java plugin.

When you see the "Activate Java" message box, simply click it to load the Java content normally.

Fx24-JavaActivate

If there is no visible area to activate Java content in the page, click the red plugin icon in the address bar. In the message panel that opens, choose "Allow Now" to enable Java content temporarily.

Fx24-JavaAllowNow

The next time you visit the site or any other that uses Java you will see this message again.

If you want to always activate Java for a particular site, you can use the "Allow and Remember" option shown above.

After activating Java, you may also see a "Security Warning" dialog box, asking you to confirm that you want to run Java. This warning comes from Java itself, not from Firefox.

NOTE: After following the above steps, your computer may freeze for around one minute while the Java program is loaded.

Does this solve your problem? Please report back soon.

New User

Re: How do I stop my whole laptop freezing when I use Firefox to visit a site that uses Java aplets?

This doesn't help because my laptop freezes before I can do anything else! I can't even uninstall Java because my laptop freezes every time I try!

Site Moderator

Re: How do I stop my whole laptop freezing when I use Firefox to visit a site that uses Java aplets?

Note that of today the Java plugin is no longer blocked in Firefox.

Did you already try to uninstall and reinstall Java?

You can find the latest Java version on the Oracle website.

See Java Platform > Java SE 7U45 (JRE Download)

Mozilla Support Contributor

Re: How do I stop my whole laptop freezing when I use Firefox to visit a site that uses Java aplets?

Can you please try running Windows in safe mode with network connections disabled.