Get solution for Mozilla Firefox Issue like for History drop down not working, bookmarking issue, remembered history clear, ad ware site blocking technique, add extensions issue or many other for resolving Firefox issue's which all are recover by Mozilla Firefox Customer Service & Helpline Number 18884675540 with Effective solution. Firefox history dropdown not working – how to solve it We know that your Firefox web browser’s location bar dropdown menu isn’t showing history. You are unable to get Firefox history and you want assistance for it. Well you can get our online + telephonic customer service and help to fix this issue. Or you can solve the problem yourself by starting the Firefox web browser in Safe mode. Generally this problem is caused by non-working extensions. Make sure you are not in Firefox private browsing mode. Start Mozilla Firefox in “Safe Mode” to check if hardware acceleration or if any extension is causing the problem. Use the Firefox’s default theme: Click “Tools” >> select “Add-ons” >> select “Appearance”. How to check Extensions: On Firefox‘s safe mode – Click “Tools” >> select “Add-ons” >> select “Extensions”. Turn of Hardware acceleration – On Firefox – click “Tools” >> select “Options” >> select “Advanced” >> Go to browsing section >> uncheck third option.