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New Firefox doesn't open http2


Firefox recently starting supporting HTTP/2 and it has stricter requirements than HTTP/1.1. You can set Firefox NOT to use HTTP/2 as a temporary workaround if necessary, but it would be a huge pain to have to have all your users do this.

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful.

(2) In the search box above the list, type or paste http2 and pause while the list is filtered

(3) Double-click the network.http.spdy.enabled.http2 preference to switch it from true to false


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