(1) In a new tab, type or paste about:config in the address bar and press Enter. Click the button promising to be careful.
(2) In the filter box, type or paste newtab and pause while the list is filtered
(3) Double-click the browser.newtab.url preference and enter the desired value:
Press Ctrl+t to open a new tab and verify that it worked. Fixed?
(2) In the filter box, type or paste newtab and pause while the list is filtered
(3) Double-click the browser.newtab.url preference and enter the desired value:
Press Ctrl+t to open a new tab and verify that it worked. Fixed?