Firefox is not working - I believe it is because a McAfee pop-up asked if I wanted to allow something, and instead of 'allow always' I clicked 'block.' A year or so ago I did this (and forgot) and it changed the settings and I also lost MF access.

Everything else about my computer works fine, but I get a small
pop-up window in the bottom right asking if I want to allow some
kind of program access, and the options are 'allow always',
'allow once', or 'block.' I forgot that I lost access to MF and
had to call someone to help me change the settings a yr or so
ago. But I believe it was this same issue - when I re-booted the
settings took effect. What must I change in my settings? I
already deleted my MF profile.

Has any had you try a reset yet? Sometimes the WiFi & Cellular anntennas get wacky.
Hold Sleep/Wak & Home buttons until the screen goes dark and you see the Apple logo

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