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2-step verification

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My Firefox (version Quantum 65.0 32-bit) and Chrome both suddenly require 2-step verification, whereas Microsoft Edge does not. So, what is happening and why? I am using Windows 10 Home Version 1803 (OS Build 17134.523).

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If you want, you can have more than one Firefox version on your system. Do you want to get rid of the older ones?

Let’s do a full clean re-install;

Download Firefox For All languages And Systems {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.

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;

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. ++++++++++++++++++++++++++++ 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. This shows how to Start all Computers in Safe Mode; Free Online Encyclopedia

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If you switch between a 32-bit and a 64-bit Firefox version then the user agent changes. It is possible that only one specific user agent disables the 2FA dialog.

You may want to keep only one Firefox version and remove.uninstall the other.

  • (64-bit Firefox) "C:\Program Files\Mozilla Firefox\"
  • (32-bit Firefox) "C:\Program Files (x86)\Mozilla Firefox\"
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