Firefox continually refuses to open, and I have worked all the suggested solutions once again. I used it for a few hours this morning, switched briefly to Chrome. Went to go back into Firefox, and it wouldn't open again. Did all the work arounds....uninstall, reinstall, even system reset to the previous day. Still won't open. I am so disappointed at having it behave so unpredictably. I sometimes sense it is related to updates....almost afraid to reboot my computer sometimes because it will not open afterwards. My recent install attempt appears among the public users, which is not the case as mine is a private PC. The Mozilla Program itself, however loaded to the 86 bit program files. Not at all sure to proceed at this point.... getting forced over to Edge it feels like....