Tools, options will fail. Opens a tab with invalid URL message. URL is "on preferences.

OPTIONS MENU, TOOLS, open a new tab with the message "the address is not valid. The URL is "aboutpreferences". I tried to start Firefox in Mode safe mode with the same result. I also used the 'Refresh Firefox' button. No change. Simply can't access my preferences anyway. I think it's a relatively new problem, but cannot say with certainty when the latter worked properly, but it worked in the past.

38 of Firefox has grown from a pop-up dialog box Options for a page of 'in the tab' options. Some users find that it does not work for them, but so far we have not determined the motive. Because you did a refresh, which would eliminate most of the possible causes. You can also test mode without failure of Firefox.

Never mind, you've already tried this step It is a standard diagnostic tool to disable some advanced features of Firefox and extensions. More info: questions to troubleshoot Firefox in Safe Mode.

Does not work if Firefox: Hold down the SHIFT key when you start Firefox.

If Firefox is running: You can restart Firefox in Mode safe mode using either:

  • button "3-bar" menu > "?" button > restart with disabled modules
  • Help menu > restart with disabled modules

and OK reboot.

Two scenarios: A small dialog box should appear. Click on 'Start mode safe' (not update).

Any improvement?

If it simply does not work, there is a preference to return to the old style dialogueOptions box:

(1) in a new tab, type or paste Subject: config in the address bar and press enter/return. Click on the button promising to be careful.

(2) in the search above the list box, type or paste pref and make a pause so that the list is filtered

(3) double-click the preference browser.preferences.inContent to true to false

Note: I don't know if that will ever be in Firefox or is a transitional device. As you have probably noticed, the long-term trend is to remove things that appear.

Tags: Firefox

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