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How can I install a second version without affecting the first?

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  • 1 has this problem
  • Last reply by cor-el

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How can I install a second version of FF without affecting my original installation?

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Installing multiple different versions of Firefox.

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Chosen Solution

Installing multiple different versions of Firefox.

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You can install multiple Firefox versions via a custom install in different installation folders and only use the older Firefox version when you really need it.
Do a custom install and install each version in its own program folder to use multiple Firefox versions.

Make sure not to start Firefox after the installation has finished.
Create a new profile exclusively for each Firefox version.
Create a desktop shortcut with -P "profile" appended to the target to launch each Firefox version with its own profile.

See also:

Use the -no-remote command line switch to open another Firefox instance with its own profile and to run different Firefox instances simultaneously.