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Firefox fails to update automatically

  • 6 replies
  • 1 has this problem
  • 4 views
  • Last reply by pcguy

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I have noticed for the past 3 or 4 updates Firefox refuses to update via Help |About. It tells me there is an update I click on the button on the about page to restart the browser yet the update never installs. The only way to update Firefox is to download the installer from Firefox website.

I have cleared cache and cookies and that has done nothing to solve this issue

All Replies (6)

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What's your computer system and Firefox version?

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It is a self built system running Windows10 20H2 and Firefox is 85.0.2

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Are the options set to auto-update?

Type about:preferences#general<enter> in the address bar. Look under Firefox Updates

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That is set and is not the problem. The problem is that the update never installs. Firefox download the update, goes through the process of closing the browser down and applying the update but it is still at the outdated build

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Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox folder, the user profiles would not be affected.


Download Firefox For All languages And Systems {web link}

Firefox ESR; Extended Support Release {web link}

Beta, Developer, Nightly versions https://www.mozilla.org/en-US/firefox/channel/desktop/

Install Older Version Of Firefox {web link}


Save the file. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux; https://support.mozilla.org/en-US/kb/install-firefox-linux

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. http://www.mozilla.org/firefox#desktop ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again.

How to Start all Computers in Safe Mode; {web link} Free Online Encyclopedia

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Yes I already found all the firefox folders and deleted them after making a backup of the profile. I downloaded the installer and installed Firefox. Time will tell if Firefox will auto-update the next minor update or not.

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