Webpage might be temporarily down or it may have moved [Fix]

I have been repeatedly getting that message recently with Opera, which has substantial overlap with Google Chrome. And only with Gmail.

Webpage might be temporarily down or it may have moved [Fix]

I don't know if this will fix the problem permanently, but the article's first suggestion, "Disable Experimental QUIC Protocol", worked. Just substitute "opera" for "chrome" if you're using Opera.

I've not had the problem at all with Mozilla Firefox.

TLC