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Firefox is suddenly not loading any website. No error message displayed, only spinning wheel endlessly displaying in tab

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I tried to disable javascript, delete pref.js file, resinstall firefox but without success.

Even the new reinstalled version crash everytime I try to close it.

This seems to have happened when I was trying to complete an order on a website...

So strange.

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I want to report the same issue. I am on Mac OS Monterey with the latest Firefox version (96, I also have the same issue with the dev edition 97.0b2). Every other browser and app using internet works with no issue, only firefox start to be unable to load anything after 2-5 minute of usage. Also, Firefox refuse to quit, I have to force quit every time.

I try rebooting, reinstalling firefox, installing the dev version, deleting the profile config manually (in user/Library/Application Support/Firefox) and it always ends up with the same issue ...

Helpful?

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I'm on Mac OS Big Sur (11.6.1) and in Firefox version 96.

Other browsers works with no issue. Starting in troubleshoot mode doesn't help.

Helpful?

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Chosen Solution

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Thank you so much... So happy to be back on Firefox...

This settings solved the problem:

Go to "about:config". Search for "network.http.http3.enabled". Set value for "network.http.http3.enabled" to "false". Restart Firefox.

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