I've been using Firefox for many years on multiple PC's. However, for some unknown reason, now, my Firefox browser is no longer functioning at all. I see the Icon on my machine, I can double click on it. It opens and the body is "BLANK". all my saved and frequent websites links are gone. I can't do anything with this?? My bookmarks to the Right are still there but if I try to open one up - NOTHING happens. I've never encountered this odd behavior before. I've uninstalled and reinstalled several times to no avail. Does anyone have any ideas about how I can fix this? I don't like using Chrome and MS Edge.. I want my Firefox back.  :( thank you!!