Searching initial prefs.js - Reset FF to initial state?

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Post Posted October 14th, 2017, 9:35 am

Í want to reset my FF v56.0.1 (under Win 7) to an initial state (without having to reinstall it).

AFAIK I have to use an initial prefs.js.

Where do I get this initial prefs.js?

Is there another way to reset FF v56.0.1?



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Post Posted October 14th, 2017, 10:43 am

Program & Profile are different & separate.

Assuming the FF program is unchanged since you've installed it, there is nothing to do on that end.

If you want a "fresh" Profile, simply create a new Profile & use it.
(A new Profile will carry nothing over from any existing Profiles.)

If all you want is a "fresh" prefs.js, exit FF, & delete prefs.js.
(If you happen to have a user.js, may want to nix that too.)
A new prefs.js (but not user.js) will be created when you start FF.

(Backup first. Instead of outright delete, a rename can't hurt.)
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Joined: March 19th, 2005, 10:51 am

Post Posted October 14th, 2017, 10:45 am

firefox creates it from scratch, not sure what you expect. but resetting includes more: ... d-settings

it has reason why this procedure is recommended.
working on prefs without knowledge is pointless.

to read


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Post Posted October 14th, 2017, 1:58 pm

Help > Troubleshooting Information = upper-right corner - aka about:support in the Location Bar
Give Firefox a tune up - Refresh Firefox ... ... d-settings

That feature only appears if the Default Profile is being used. With "Remote" Profiles and non-Default Profiles that option won't appear there.

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Post Posted October 14th, 2017, 2:11 pm

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