Solutions to fix it Firefox Hangs

 Firefox hangs after using it for a long time

Update Firefox

The latest Firefox versions includes improvements in memory usage, especially during long sessions.

Restart Firefox

Firefox may hang if left open for long periods of time. To fix the issue, restart Firefox.

If you regularly leave Firefox open so that you return to where you left off, you may want to use Firefox's Session Restore feature.

Firefox hangs when downloading files or saving images

If Firefox hangs when you attempt to download a file or save an image, try these solutions:

Clear download history

Firefox may hang when downloading files if your download history has grown too large. To clear the download history:

1. Click the Downloads button  on the toolbar, if it's available, or else click the Library  button and click Downloads from the menu.
2. Click Show All Downloads at the bottom of the Downloads panel. The Library window will open.
3. Click the Clear Downloads button at the top of the Library window.
4. Download some sample files to see if the hanging has stopped.

Choose a different download folder

Firefox may hang if the last download folder location (e.g. a shared volume or USB drive) is no longer available. To fix this:

1. Click the menu button  and select Options.
2. Select the General panel.
3. Under Downloads, select Save files to and click the Browse button.
4. In the Choose Download Folder window, choose a new folder location.
5. Close the about:preferences page. Any changes you've made will automatically be saved.

See if you are now able to download files or save images. If this works, you can go back to your Firefox settings, if you wish, and select Always ask me where to save my files.

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Mozilla Firefox Hangs on Windows 10

 Freezing or Hanging is a process where a program stops responding to a user’s input. A hang or a freeze is different from a crash. A Crash ends the program, and the windows automatically shut down. The reasons can be many. It could include the installation of incompatible themes, extensions, or programming errors in plugins. I am suggesting some troubleshooting steps which you could follow in case you find that your Firefox is giving you problems in Windows.

1. Bad Firefox Add-on

My next suggestion would be for you to open Firefox to Safe Mode and check out if you have any bad add-ons installed. If the Firefox browser freezes without any warning when you type something or click on a button link, close all the tabs and start Firefox in Safe mode.

To do this, open the Firefox browser, click on the Settings button in the top right corner. Next click on the small blue circular question mark sign. Next, select Restart with Add-ons disabled.

 Now, if Firefox runs without freezing, it suggests a bad add-on – either an extension or toolbar – some extensions are prone to memory leaks.

 2. Update Adobe Flash version

• If you are facing freezing or experiencing a  delay while starting Firefox, you might want to check out if your Adobe Flash, Java plugins are up-to-date. Some versions did cause Firefox to freeze or crash. 

3. Check Windows shell extensions

Some Windows shell extensions can also cause problems with your Firefox Hangs, causing it to freeze or crash. You can use ShellExView to see all the explorer shell extensions and then try to selectively disable extensions which you suspect could be the cause of your problems.

4. Extensions of 3rd party software

Extensions of your antivirus, security suite, site advisors, password manager, download managers could also be a possible cause. Again, disable each one selectively and see if you can identify the offending issue.

5. Create a new Profile

The Firefox User Profile Manager allows you to create an additional profile. Create a new profile in Firefox and transfer all your settings and other data to the new profile, and see if it helps.

6. Reduce Firefox memory usage

You may also want to consider reducing memory usage of Firefox by changing the about:config preferences. You may especially want to tweak these settings:

• browser.cache.memory.capacity,
• browser.cache.memory.enable
• browser.sessionhistory.max_total_viewers settings.

Do so only if you know what you are doing. Reducing memory usage by carrying out just tweaks, removing themes, Personas, and reducing add-ons or plugins can also help you resolve your problem.

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How to fix firefox running slow?

Solution 1 – Change your power settings to High Performance

Many users reported that Firefox is running slow on their PC, and this issue is most often caused by your power settings. According to users, Windows 10 sometimes changes your power plan to Power Saving once your upgrade to it, so it’s advised that you change your settings to High Performance. To do that, follow these steps:

1. Press Windows Key + S and enter power settings. Choose Power and sleep settings from the menu.
   

    2. Now select Additional power settings.

3. Once the Power Options window opens select High Performance profile.

We have to mention that switching to High Performance mode will drain your battery faster due to increased power consumption, but Firefox should be working without any slowdowns.

Solution 2 – Switch to a different theme

This is a possible workaround, but few users reported that it works, so you might want to try it. According to users, switching to a different, less demanding theme fixes issues with slow Firefox on Windows 10. Users reported that using a theme such as High Contrast theme fixed all slowdown issues for them.

By changing the default theme to less demanding one, Firefox might not look visually appealing, but it should work faster than before. To change your Firefox theme do the following:

1. Open Firefox and click the Menu button in the top right corner and choose Add-ons.

      2. Select Get Add-ons tab on the right and click Featured themes.

      3. Try to find a simple theme that won’t use too much of your resources and install it.

Solution 3 – Check your antivirus

If Firefox is slow on your Windows 10 PC, the problem might be your antivirus. Antivirus tool is a necessity, but sometimes your antivirus can interfere with your web browser and cause slowdowns. Many antivirus tools also tend to install various extensions in order to offer extra protection, but these extensions can also slow down your browser.

If Firefox is running slow, be sure to remove any extensions that are installed by your antivirus. These extensions aren’t mandatory, so you can disable or remove them without fear. In addition to extensions, you might want to check your antivirus settings and see if modifying your settings fixes the problem. Several users reported that disabling Active Protection feature fixed the problem for them, so you might want to try that.

Solution 4 – Change your settings

If your Firefox is running slow, the problem might be your settings. Sometimes certain Firefox services can interfere with Firefox and cause slowdowns to occur. However, you can fix that by doing the following:

1. Click the Menu button in the top right corner and choose Options from the menu.
   

2. Select Privacy & Security from the menu on the left. Now scroll down to Permissions section and make sure that Prevent accessibility services from accessing your browser option is disabled.

After disabling this option, check if the problem with Firefox is resolved.

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How to fix firefox hangs error?

Although Mozilla Firefox is one of the most reliable and readily used browsers, some potential problems also influence users' browsing experience. Moreover, users' complaints arise especially after users finish updating Firefox. According to their report, Firefox often keeps freezing windows and they can do nothing.
Incompatible accessibility services installed, duplicated Session Restore file created, a sizable browsing history influenced could be the reasons why Firefox keeps freezing. To fix Firefox freeze issue, please read this troubleshooting post and follow the instructions below.

Speed up iOS 9 by Reducing Transparency & Motion

Hard acceleration is created to provide better browsing experience to users, but sometimes it is also a cause of some problems, such as the problem that  Firefox hangs. To make Firefox run smoothly, you can turn off hard acceleration to check if Firefox unfreezes windows.

•  Click on "≡" menu icon.
•  Go to "Options" (Windows) or "Preference" (Mac).
•  Disable "Use recommended performance settings".
•  Disable "Uncheck Use hardware acceleration when available".
•  Restart Firefox.

Prevent Accessibility Services

In most cases, untrustworthy accessibility services have a negative impact on Firefox performance. Probably, that's why Firefox keeps freezing. In this case, you'd better stop accessibility services to access your Firefox. Here's a simple tutorial.

• Go to "Options">"Privacy & Security" section.
• Scroll down to "Permission" section.
• Enable "Prevent accessibility services from accessing your browser" option.
• Click on "Restart Firefox now".

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