How to enable java in mozilla. Single case of Java enablement

Doesn't see Java because it no longer supports any NPAPI plugins except Adobe Flash. However, if you are using an older version Mozilla Firefox with Java support, you may need to install updated Java.

How to enable Java in Firefox

If you don’t know whether you have Java installed in Firefox or not, then to find out you need to click on the Menu Bar in your browser Tools — Add-ons and in the page that opens, go to the tab Plugins. If Java is not in the list that opens, then you need to go to special service at www.java.com.

Download Java plugin Firefox

On this service you can download Java for Mozilla to your computer. Also on this service you can check whether your Firefox version works with Java. To do this, just click on Is it installed on my computer? software Java?.

Java does not work in Firefox starting from version 52

Then, on the open Plugins tab, click on the gear and select the item from the list that opens Install add-on from file. A window will open in which you find the Java plugin you downloaded for Firefox and open it. After this, you will need to wait a little while Java is installed in Mozilla Firefox, and it will work immediately after restarting the browser.

Beginning with Mozilla browser Firefox 52 Java and other NPAPI plugins are no longer supported

You can install JavaScript in the new version of Firefox. To do this, on the Plugins tab, enter the word in the search box Java and press on the keyboard Enter key. After this, a list will appear in which you need to select the JavaScript that is suitable for you and install it by clicking on the Install button. For example, the JavaScript on-off applet will help you disable and enable JavaScript in Mozilla.

JavaScript (not to be confused with Java) - scripting language, used to interact with various elements on the HTML page. Sliders, galleries, color switching, notifications, sending messages, chats - this is not a complete list of what JavaScript works with. In this tutorial, we will tell you how to enable and disable JavaScript in the Mozilla Firefox browser.

Launch Firefox, in address bar enter about:config and press the key Enter:

IN search bar enter the command javascript.enabled:

In the found line double click left mouse button set the value true:

That's it, now you will have access to various interactive elements, requiring the execution of JS scripts.

Disabling JavaScript in Firefox

To disable JavaScript, simply change the value mentioned above from true on false double click the left mouse button:

After enabling or disabling JavaScript, you must restart your browser for changes to take effect.

Management Rating:

Java is mainly used for online games. To run correctly, you need to install it correctly and update it from time to time. It is also necessary to remember that Java is a programming language.

Installing it is quite simple; just visit the developer’s website and download (java.com). We confirm there Terms of use and download.

How to enable Javascript in Mozilla Firefox

By the way, it is completely free, there is no need to pay for downloading and there are no hidden fees.

After downloading the application to your computer, close the program and the other browsers you are using. Only after closing all browsers should you start installing the application.

Update

After downloading and Java installations install it automatic update. The program itself will check for updates and notify you about it. You can change update settings in the Update tab in the control panel.

There you can also check for updates manually, but it is more convenient, of course, to allow the program itself to do this.

Don't forget to delete old versions of the Java application after updating - this will help save space on your hard drive and eliminate possible security threats to your personal computer.

How to check if this application is working

Everything is very simple, to check just go to the testing pages:

It won’t take more than ten minutes of your time, but you will find out if this program works for you.

Correct activation of this application

Enabling Java does not bring any problems. Just follow the instructions and you will succeed:

Troubleshooting an application

There are several reasons why a program plugin may stop working.

Let's look at the most basic ones:

Removing a Java Plugin

Choose yours operating system and follow the directions strictly.

Windows 8

1. In Start, select Control Panel.
2. Find the “Uninstall programs” tab.
3. Select the program and click “Delete” and confirm your action.

Windows 7

1. Open “Start” as standard.
2. Next is the “Control Panel”.
3. Then “Programs”.
4. And the last one is “Programs and Features”, there we select the application and delete it.

Windows 10

1. We go to “Start”.
2. Next “Settings”.
3. There we find “System”.
4. "Applications".
5. We select the program that we decided to remove (in our case Java), click on it and the “Delete” button.

How to enable JavaScript in the browser?

How to enable java scripts in the Mozilla Firefox browser:

– in the address bar of the browser, enter about:config, press the key Enter;

– a tab will open Be careful or you will void your warranty! with a message “Changing these settings may result in poor stability, security, and performance. this application. You should only change something if you are confident in what you are doing.";

– press the button I promise I'll be careful!;

– a tab with browser settings will open;

– in the text field Search enter java;

– all java settings will be displayed;

– highlight the option javascript.enabled(second line from top);

– click the right mouse button;

– from the context menu select Switch(or double-click the option line with the left mouse button);

– meaning false will change to true.

How to download and install Java online for the Firefox browser on Windows?

This section concerns:

• Platforms: Windows 2008 Server, Windows 7, Windows 8, Windows XP, Windows Server 2012, Windows Vista, Windows 10
• Browsers: Firefox
• Java Versions: 7.0, 8.0

The Java installation procedure consists of the following main steps:

1. Download and installation
2. Verifying the installation

» System requirements for Windows

Download and installation

It is recommended that you disable your firewall before beginning an online installation. In some cases, the default firewall settings prevent any automatic installations or installations over the Internet (such as installing Java over the Internet). If the firewall is not configured appropriately, it may block Java download/installation in some cases. For instructions on how to disable the firewall, see your firewall documentation.

• Go to Java.com and click the button Free Java Download(Download free version Java)
• On the download page for Firefox, click the download button to begin the download process
• The ‘File Download’ dialog box will open asking you to save the downloaded file.

  How to enable javascript in FireFox

• To launch the installer, click on the file in the download manager window or in the folder where you usually save downloaded files. Depending on your security settings, you may be prompted to confirm whether to proceed with the installation. Confirm to continue installation.

Detection of outdated versions (8u20 and later). Starting with Java 8 update 20 (8u20), on systems Windows tool Java removal Uninstall Tool integrates with the installer. This allows you to delete outdated versions Java from the system. This change applies to 32-bit and 64-bit Windows platforms.

Java Disabled and Query Restore Notifications

The installer notifies the user if Java content is disabled in web browsers and provides instructions on how to enable it. If the user has previously hidden the appearance of some security prompts for applets and Java applications Web Start, the installer, provides the ability to restore these requests. The installer may prompt you to restart your computer if the user has previously rejected the request to restart your Internet browser.

Verifying the installation

To verify that the Java package is installed on your computer and is working correctly, run this test applet.

NOTE. You may need to restart (close and reopen) your browser to allow Java to install in your browser.

Additional resources:

Java plugin doesn't work in Firefox after installing Java

This section concerns:

• Browsers: Firefox
• Java Versions: 7.0, 8.0

Firefox has limited NPAPI support for Java applets

Firefox 64-bit

The 64-bit version of Firefox does not support NPAPI plugins, including Java.

Firefox 52 and later

Firefox browser version 52 (released March 2017) only supports pluggable Adobe module Flash. The browser will no longer support NPAPI technology, which will impact plugins for Java, Silverlight, and other NPAPI-based plugins.

If you are having trouble accessing Java applications in the Firefox browser, Oracle recommends switching to using the browser Internet Explorer(Windows) or Safari (Mac OS X). Developers and system administrators who require alternative ways Firefox user support, we recommend checking out this launch blog Web applications Start.

Firefox 52 ESR release, 32-bit

Mozilla offers Firefox version Extended Support Release (ESR) for organizations that require additional support for mass deployment. Only the Mozilla Firefox 52 ESR (32-bit) release will retain the technology to support the standards-based plug-ins required to run Java applications. To find out if you are using the ESR edition, open the Firefox menu (Help -> About) and check for the "ESR" identifier.

Mozilla will continue to support Firefox ESR releases for approximately a year. Developers and users using Java plug-in technology on 32-bit Mozilla versions Firefox, you should consider switching to another solution.

see also

» Plugin Support in Firefox (Java Product Management Blog)
» Plug-in support and Firefox 52 (mozilla.org)
» NPAPI plugins in Firefox (mozilla.org)

Firefox 42 crashes unexpectedly when trying to execute a Java plugin

Note. There is a workaround for Firefox 42, it requires Windows Java version 8 (update 66, build 18) or later. » Additional information see JDK-8133523.

Temporary solution

Below are several possible workarounds. The first is the most the simplest way, we recommend that users do just that. The remaining methods are not recommended for non-technical users.

Option 1 (simplest)
Adding a property name to Firefox preferences

1. Launch Firefox.
2. Enter in the address bar.
3. Firefox will warn you about the risks associated with changing configuration settings. Confirm this message and a list of configuration settings will be displayed.
4. Click right click mouse through the displayed list of settings. Select Create, then select Boolean.
5. Add a property name
   Add the setting name dom.ipc.plugins.java.enabled.
6. A window will open, select false. Then click OK.

Option 2
Creating a "user.js" file with a configuration entry

The instructions are based on information contained in the Mozilla links below.

1. To create a file "user.js" in the folder Firefox profiles use a text editor
2. Add an entry:

Option 3
Updating a preference entry in the "pref.js" file

1. Navigate to the "pref.js" file in the Mozilla profiles folder
2. Find and update the setting

Links to resources for Mozilla

» http://kb.mozillazine.org/User.js_file
» http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

Firefox Warning: Add-ons may cause problems

When you launch the Firefox browser, the following warning message is displayed:

Firefox has determined that the following add-ons may cause instability or security issues

Cause

Older package versions Java Deployment Toolkit (DT) and Java plugin are disabled by Firefox.

How to enable JavaScript in Firefox and what it is for

If some versions are available Java browser Firefox may display the message 'Add-ons may be causing problems.'

If Firefox suspects that an add-on is unsafe and may pose a security risk, it will block the download. In case of soft Firefox locks will display a warning message but allow the user to continue downloading if necessary. At the same time, security is reduced. In case of a hard block, Firefox will block the installation, preventing the user from using the add-on. To resolve this issue, the user must update the Java platform to the latest version.

Temporary solution

Updating to the latest version of Java will help resolve this issue. If a warning is displayed, follow these steps:

1. Make sure Disabled is selected.
2. Click the ‘Restart Firefox’ button.
3. Download the latest version of Java..

Java doesn't work in Firefox due to offline JavaFX installation

After the installation of Java 7u10 and later versions is completed, the following error message is displayed:

Error: This content requires a plugin to display. Install the plugin

Cause

The reason for this may be a conflict between Java 7u10 and above later versions and standalone JavaFX installations. Example: if Java 7u5 and JavaFX 2.1.1 are installed, with Java update Firefox cannot detect the installation of a new version of Java.

Temporary solution

Uninstall the standalone version of JavaFX (Windows)

1. Find and remove all versions of JavaFX and Java using the panel Windows management to remove components.
2. Run the removal utility Microsoft programs to fix damaged registry keys that prevent programs from being completely uninstalled or block the installation and updating of new programs.
3. Reinstall Java.

SEE ALSO

Additional resources:

Many sites have animated menus and play sounds. This is achieved by using JavaScript– a programming language designed to improve network content. If the image or sound is distorted when you go to such a site, or Firefox slows down, then most likely JavaScript is disabled in your browser. You can enable it through one of the Firefox browser settings.

Steps

1 Firefox 23 and later

To find out your browser version, press Alt+H; In the Help menu that opens, click About Firefox.

1. 1 Launch Firefox. The Firefox icon is a fox curled around globe. Then press Ctrl+T (Windows) or Command+T (Mac OS) to open a new browser window.
2. 2 In the address bar, enter and press Enter or Return. A list of browser settings will open.
   • For quick transition bookmark this list. To do this, press Ctrl+D (Windows) or Command+D (Mac OS).
3. 3 In the window that opens, click “I promise I’ll be careful.” Remember that the settings that open are intended for advanced users only. Don't change settings unless you know what it will do (this may cause your browser to not work properly).
4. 4 In the search bar, enter.. Settings are displayed in alphabetical order. Each setting has a number of columns: Name, Status, Type, and Value. By entering the name of a setting in the search bar, only that setting will appear on the screen and the others will be hidden.
   • Also you can find desired setting, by pressing “Name” – J. The first setting, whose name begins with the letter j, will be highlighted. Enter JavaScript to highlight the desired setting.
5. 5 If at the settings. the “Value” column is set to “False”, double-click on “False” and replace it with “True”. (JavaScript should be enabled by default.)
6. 6 Refresh the page in your browser. To do this, click on the icon in the form of two semicircular arrows. This icon is located to the right of the address bar.
   • Or press F5 (Windows and Mac OS).

2 Firefox 22 and earlier

1. 1 Open Firefox. From the menu bar, click Tools. If the menu bar is not visible, press Alt.
2. 2 Then click Settings (Windows) or Options (Mac OS).
3. 3 Go to the Content tab. Here you can change the settings for fonts, languages ​​and media content.

   How to enable JavaScript in Mozilla Firefox

4. 4 Click Enable JavaScript (Windows) or Enable Java (Mac OS).

3 Troubleshooting add-ons

If after turning on JavaScript browser Firefox is slow, fix the problem using one of the following methods.

1. 1 Click "Menu" (on the right top corner) – “Additions”. Add-ons (extensions and plugins) increase the functionality of Firefox and help the user customize the browser for themselves.
2. 2 Click "Extensions". A list of all will open installed extensions. A disabled extension will appear in gray text and a "(disabled)" label.
3. 3 Click on the active extension and click Disable. Or right-click the extension and click Disable.
4. 4 At the top of the browser window, click Restart Now. If the problem persists, then a disabled extension is not the cause. Enable this extension by highlighting it and clicking Enable.
5. 5 Click "Plugins". A list of active plugins will open. Plugins work in background and expand functionality Firefox, for example, makes it possible to make calls via Skype directly in the browser.
   • Outdated plugins are the source of many problems. You can update all plugins at once by clicking on the link “Check for current versions installed plugins" (at the top of the page).
6. 6 Highlight a plugin by clicking on it.
7. 7 Click Always Enable and select Enable When Requested or Never Enable. Disable plugins one at a time to check if a particular plugin is causing Firefox to slow down.
   • There is no need to restart Firefox after enabling or disabling a plugin.
8. 8 Scroll down the list to view disabled plugins. IN Firefox plugins are sorted alphabetically, and disabled plugins appear at the very end of the list.
9. 9 Click Never Enable and select Enable When Requested or Always Enable (depending on your preference).

4 Troubleshooting other problems

Press Alt+T to open new tab; then close the others open tabs. Cleaning the Firefox browser will remove all add-ons and reset the settings to default. To avoid losing important data, close all tabs except one (empty).

1. 1 Click “Menu” – “Help” – “Problem solving information”. If you don't see the menu bar, press Alt.
2. 2 Click "Clean up Firefox" (in the top right corner of the page.
3. 3 Click Clean Firefox again. As a reminder, cleaning your browser will remove all add-ons, but you can reinstall them.

• Change only one parameter at a time. If the program malfunctions, you can quickly determine the cause of the problem.

If you use to surf the Internet Firefox browser, aka Mozilla, and periodically encounter problems loading videos, images, or lack of any response when you click on a button anywhere on the site, the confusion may be caused by the Java display settings in your browser. you can find out in this article.

What is "Java" and why your browser doesn't like it

Java is one of the most common web technologies today. The functioning of many websites and programs is based on it. Why isn't Java support enabled in the browser? Firefox refuses to support java job automatically, as it considers it vulnerable to viruses. IN the future of Firefox plans to completely abandon support for any plugins (tools for playing content) other than Adobe Flash.

But such a policy Mozilla company in relation to “Java” does not mean at all that when you turn on the corresponding plugin, a million malware. Sometimes you need to enable Java in Firefox for site performance reasons. This can be done in several ways.

Single case of Java enablement

Let's say you're surfing the Internet, find a video that interests you, and want to watch it. You click the Play button, but instead of playing, the following screen appears:

The only action you need to take is to click on the inscription. In addition, Firefox may prompt you to remember this site and always activate the Java plugin on it. If you trust this site, then confirm your choice in the dialog box (Allow and Remember).

In addition, sometimes application blocking comes from Java itself, and not from Firefox. In more modern versions Java has a number of fairly stringent requirements for applications to run. If the developer is unknown, then most likely the ability to launch a Java application will be blocked. Even if you decide to manually enable Java in Firefox by going to the security settings and selecting the desired site or application as an exception, the browser will still consider it suspicious and display a warning about a potential threat.

How to enable Java support in Firefox

There is another way to get to activating Java support. First, you need to go to the page with plugins (open the menu and select the “Add-ons” button or press the key combination Ctrl-Shift-A). A list of addons will open in front of you, among which we need to find the following:

If this plugin is not in the list, use the search bar in the upper right corner. You can search for the word Java - the search will return several add-ons from which you can choose the appropriate one, having first studied exactly what functions they are designed to perform.

If all of the above steps did not help you enable Java in Firefox, you may need to completely update the application on your computer. To do this you need to download latest version from the developer’s website and install it on your device. After this, try opening Firefox again and launching the problematic site or application. In the end, you can open a capricious site in another browser and see how it behaves there.

Many users have experienced difficulties with the lack of Java in new versions of the Mozilla Firefox browser. This is due to the fact that the developers have stopped supporting almost all plugins. Fortunately, you can always manually download and run a Java plugin. In this guide we will look at this process in detail.

Please note that the Java plugin cannot be installed and run in the 64-bit version of Mozilla Firefox.

Remember that JavaScript and Java are two different technologies.

Step 1: Download the Java Plugin

Launch Mozilla Firefox, go to the official Java website and click on the button Download Java for free:

Save the file and run it:

Step 2. Install the Java plugin

Choose Install:

We are waiting for the installation process to complete. If you already have old version plugin, a window will appear in which you can remove it by clicking on the button Uninstall:

The old plugin has been removed, click on Next:

All, a new version The Java plugin is installed, click on Close:

Step 3: Enable Java

Restart the browser. Open the tab Tools → Add-ons:

In the tab Plugins are looking for Java(TM) Platform SE and set the value Always turn on:

Step 4. Adding sites to the exclusion list

Starting with Java 8, developers have implemented a standard that blocks many unsafe Java games and applications. If you still want to run them, you will have to use the exclusion list. To call it, open the menu Start → Control Panel→ indicate in the search line Java→ select Java Control Panel :

Switch to the tab Security and select the option Edit Site List:

Press the button Add:

We indicate the address of the web service or game that you want to launch bypassing Java security standards:

Click on Continue:

Click on OK V Java Control Panel. Now when you run this Java applet you will be asked to give permission. Click on the button Run to launch a game or web service.

Beginners often confuse or mismatch programming languages ​​such as Java and JavaScript. This is due to their similar name, which evokes corresponding analogies. The only thing in which they are similar is the goal of making familiar web resources more convenient to use.

In this article, we will look at the differences between these programming languages ​​and figure out how to activate Java in browsers if a plugin or script was accidentally disabled.

What is the difference

Let's start with a simple explanation of the difference between the two technologies given above. Java is a technology created to develop applications that can run offline or through browsers.

Regarding JavaScript, everything is similar, except battery life. This technology is aimed at working only with browsers. The script is initially placed in HTML files where it provides stable work and the exchange of data between web pages and the browser.

To supplement the information received, we will give an example of the main differences between these languages.

• Unlike Java, JavaScript comes in text format, which is much easier than carrying out additional compilation.
• The reliable operation of each technology lies in connecting different modules.
• The operating algorithms of the languages ​​are completely different and have practically nothing in common.

Working with the Java Plugin

Before you start working with the plugin, you will need to download it from the official source located at https://java.com/ru/download/. As a precaution, disable your antivirus's firewall, otherwise there is a chance of your download being blocked.

• As soon as you follow the link provided, a window will open where there will be a red button with the inscription “Download Java for free”.
• Click on it and wait for the download to finish.
• Run the source file.
• A small launcher window will appear, where you need to click “Install”.

After a short installation, the plugin will be available for use on your computer.

How to enable Java in the browser

Installing Java only solves the main problem in gaining access to the plugin. Now you need to check its functionality through the browser.

Internet Explorer

• In the upper right corner there is a gear that you need to click on.
• A small menu will appear, select Internet Options.
• Here you need to find the “Security” section and click on the “Other” item.
• Rotate the window that appears until the talking block “Run Java application scripts” appears in front of you.
• You can enable it using the checkbox on the left.
• The “OK” key will allow you to save the new settings and exit.

Google Chrome

The project developers limited access to working with plugins after the release of version 42 of the browser in 2015. In simple words, it will not be possible to launch Java using available tools.

Firefox

This web browser left users the opportunity to independently adjust many aspects of the program.

• First of all, go to your browser settings.
• Select "Tools" and then go to the "Plugins" block.
• Here is the self-explanatory name “Java”. You need to click on it.
• Pay attention to set value. For the extension to work, the “Always Activate” or “Request Activation” option must be set. It changes depending on the user's wishes.

How to enable JavaScript

Many sites resort to using Javascript in order to provide more features to their users. Let's find out how to enable this feature in popular browsers.

Google Chrome

• Go to "Settings" using context menu as three points located in the upper right corner.
• Scroll down the window and open "Advanced Settings".
• In the “Privacy and Security” block that appears, select “Content Settings”.
• Pay attention to the “JavaScript” item and open it.
• There should be an active toggle switch opposite the inscription “Allowed”.

When making changes, be sure to restart your browser.

Internet Explorer

• Go to the system settings using the gear icon.
• Go to the "Internet Settings" section.
• From here, navigate to the "Security" block by clicking "Advanced" here.
• What is important to us here is the block with the self-explanatory name “Scripts”. It contains the “Activate Scripts” section, which should be in the “Enabled” state.
• An activation window will follow, where you just have to click “Yes”.

As in the previous case, you must restart your browser for the changes to take effect.

Mozilla Firefox

In this case, everything is much simpler compared to the options above.

• Open the Tool menu and select Settings.
• We need the “Content” block, it is third on the list.
• Visit it, check the box next to “Use JavaScript”.
• Confirm the action using the "OK" button.

Yandex browser

The domestic project requires spending a little more time navigating to the control menu.

• Visit the "More" submenu shown in the form of three lines.
• Rotate the window that opens to the very bottom until you come across “Show advanced settings”.
• Get to "Personal Information". Select Content Settings.
• There is a section dedicated to Javascript; in it you need to check the box next to “Allow JavaScript on all sites”.
• All you have to do is click “Finish”.

If necessary, the script can be configured for individual Internet resources; all you need to do is devote a little time to the “Exception Management” settings.

Opera

Everything is as simple as possible here:

• Visit the Settings section.
• Immediately go to the “Advanced” tab and switch to the “Contents” item. Next to “Enable JavaScript”, check the box.

Conclusion

It is quite simple to enable any of the Java languages; it is only important to understand the settings of web browsers.