Hello, open Firefox and go to '''about:profiles''' by typing it in your URL bar and pressing enter, then click on the''' Open Folder''' button under '''root directory''' on the page, you will see your profile opened in a new Explorer window. On the '''desktop''' there should be a Folder called ''''Old Firefox Data'''' open it, and '''copy all the files from there, into the current/new profile folder you just opened.''' Then''' restart Firefox. ''' If this solved your problem, mark as solution.