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Add-ons manager will not work/open nor will Firefox update feature

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  • 2 have this problem
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  • Last reply by guigs

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Firefox 31. When I open Add-ons manager only the "Plugins" feature works, the "Get Add-ons", "Extensions"& "Appearance" features don't. The "DownloadHelper" add on does not work/open either. I'm also unable to update Firefox.

Firefox 31. When I open Add-ons manager only the "Plugins" feature works, the "Get Add-ons", "Extensions"& "Appearance" features don't. The "DownloadHelper" add on does not work/open either. I'm also unable to update Firefox.

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Hi, Thank you for your question, and I understand that it is frustrating not being able to see that page or update Firefox. However, the good news is the computer you are reporting the issue from is up to date already. If this is not the computer with the issue I would recommend trying these steps: How to fix the Update Failed error message when updating Firefox as well as a clean reinstall for the addons page.

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:

Note: You might want to print these steps or view them in another browser.

  1. Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
  2. After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
  3. Delete the Firefox installation folder, which is located in one of these locations, by default:
    • Windows:
      • C:\Program Files\Mozilla Firefox
      • C:\Program Files (x86)\Mozilla Firefox
    • Mac: Delete Firefox from the Applications folder.
    • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
  4. Now, go ahead and reinstall Firefox:
    1. Double-click the downloaded installation file and go through the steps of the installation wizard.
    2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

More information about reinstalling Firefox can be found here.

WARNING:Do not use a third party uninstaller as part of this process. Doing so could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See Back up and restore information in Firefox profiles.

Please report back to say if this helped you!

Thank you.