Fixed: Firefox Add-Ons Not Working

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On PC, do the Firefox Add-Ons Not Working? Then I’ll give you this easy-to-follow guide to fixing the problem. While a browser gives you access to many websites, browser add-ons solve specific problems that come up when you browse the web. For example, you can add a downloader to Firefox so that you can save the video and audio to your PC.

In the same way, there are add-ons that serve different purposes. Some Firefox users say that the Firefox add-ons they have put on their PCs aren’t working the way they should. This makes the browsing experience less complete. There are many reasons why an add-on might not work. As a user, you might not have set up your browser in a way that lets the add-on work the way it should.

Some Firefox users say that the add-ons they have put on their PCs aren’t working the way they should. This makes the browsing experience less complete. There are many reasons why an add-on might not work. As a user, you might not have set up your browser in a way that lets the add-on work the way it should.

Firefox Add-Ons Not Working

Reenable Firefox Addons Manually

• Launch your Firefox and click the menu button at the upper right corner of the window.
• Choose Add-ons from the drop-down menu.
• On the new page, click Extensions in the left pane and enable all your desired add-ons.

Modify Your System Date and Time Settings

• Press Windows + I to open Settings.
• Navigate to Time & Language > Data & time.
• Disable Set time automatically and Set time zone automatically options. Then, click the Change button.
• In the pop-up window, adjust the date and time to correct them. Click the Change button.

Remove the Toolbars and Buttons Customization

Firefox allows users to customize the toolbars and buttons as their own preference. However, the customization might also lead to Firefox extensions not working issue. To fix the problem, you can go to remove the customization and restore it to the default status.

• Launch Firefox and open the Menu.
• Choose Customize from the drop-down Firefox menu.
• When you get to the following page, click the Restore Defaults button at the bottom right corner of the window.

Edit the Extensions.json File

• Open Firefox, input about:support in the address bar, and press Enter.
• Locate the Profile Folder item and click the Open Folder button next to it.
• Now, exit Firefox and close all the related processes. In the pop-up File Explorer window, locate the extensions.json file and open it with Notepad.
• Press Ctrl + F, input appDisabled, and click Find Next to locate the item quickly. Then, change its value to false. Next, search for signedState in the same way and change.

Refresh Your Browser

Most problems with Firefox can be fixed by restarting the browser. If none of the above solutions work for you, you can try restarting Firefox. Here’s an easy way: double-click the Firefox shortcut while holding down the Shift key. Click Refresh Firefox in the new window that comes up. Then, click Refresh Firefox again to confirm the action.

Correct Date and Time of Your System

• Right-click on the clock (shown in your system tray) and in the resulting menu, click on Adjust Date/Time.
• Now, disable the options of Set Time Automatically and Set Time Zone Automatically.
• Then click on the Change button (under the option of Set the Date and Time Manually) and then adjust the date and time.
• Now set the correct Time Zone of your system and then check if Firefox is clear of the error.
• If not, then try to set the date of your system to one day back and check if the issue is resolved.
• If even moving one day back doesn’t work, then try to set the date to the correct one and check if the Addons issue is resolved.

Enable History in the Firefox Options

• Launch the Firefox browser and open its menu (by clicking on the hamburger menu near the top right of the window).
• Now, in the resulting menu, select Options and then, in the left half of the window, select Privacy & Security.
• Then scroll down and in the History section, expand the dropdown of “Firefox Will”.
• Now, in the dropdown, select Remember History and then check if the issue is resolved

Remove All Files from Storage Folder of the Firefox User Profile

If Firefox’s profile storage is broken, you might get the error being talked about. This usually happens when your operating system files are moved or after a bad update. In this case, the problem might be fixed by deleting all the files in the Storage folder of the Firefox user profile (the files will be recreated on the next launch of Firefox).

1. Launch Firefox and type about:support in its address bar.
2. Then, in front of the Profile Folder (in the table of Applications Basics), click on the button of Open Folder.
3. Now, minimize the Profile folder and close the Firefox browser (make sure not Firefox related process is running in the Task Manager of your system).
4. Then switch to the Profile folder and then open the Storage folder
5. Now delete all of the contents of the storage folder and then restart your system.
6. Upon restart, launch the Firefox browser and check if its addons are working fine.

Visit their official website for more information.

Create a New Firefox Profile

The Firefox add-ons might not work if your user profile of Firefox is corrupt. In this context, creating a new user profile may solve the problem. Before proceeding, make sure to backup essential information/data of the Firefox browser and its extensions.

• Create a new Firefox user profile.
• Now, check if the addons issue is resolved. If so, then you can copy the cert9.db to the old profile to check if it was causing the issue.

FAQ

How do I enable private add-ons in Firefox

1. Open Firefox, and click the “≡” menu bar at the top of any window or tab.
2. Click Settings.
3. Click Extensions & Themes.
4. Under Manage Your Extensions, find the extension you want to allow in private windows.
5. Click Manage.
6. Next to Run in Private Windows, select Allow.

How do I refresh my Firefox extensions

1. Click the menu button.
2. Click Refresh Firefox… then Refresh Firefox in the confirmation window that opens. …
3. When finished, a window will list your imported information. …
4. Select whether you want Firefox to restore all or some windows and tabs and click the Let’s go!

How do I debug Firefox extensions

Click Web Developer and then Debugger in the Firefox menu (or Tools if you have a menu bar or are using macOS). Click Debugger after pressing Ctrl + Shift + I (Command + Option + I on macOS).