Never had this before. I opened firefox this morning and restored the old tabs as I usually do every morning. They all opened up (e.f. tab with the correct title) but the address is empty and nothing loads. Attempted in order: - open a new tab, would not even load google, simply a white page - same action on new window, same result - refreshed firefox= nothing - uninstalled firefox = no luck - removed the apps I installed in the last days (visual studio code) - installed firefox from scratch (no account sync) 82.0 (64-bit) nothing at all. Same result see image in attachment. I also have: removed all cookies/cache (refresh would do any ways), scanned my computer for viruses (nothing found). It doesn't open the options from the menu, it doesn't show anything under about:config Windows 10 2004 In 15 years I'm using FIrefox I have never seen anything like this :-o