Firefox got stuck at cloudflare check if the site connection is secure


Firefox browser v.66 (and many other versions) stuck in an infinite loop of CF checking.
And it lasts for a several months already. A few years before a same issue happaned but CF resolved it quickly.

Checking if the site connection is secure needs to review the security of your connection before proceeding.

Then it shows
Success icon Connection is secure Proceeding...

And it loops again and again.

In the same time old chromium browser does not expirience such problems.

Firefox 66 is several years into the end-of-life cycle - you should definitely look to move onto the stable (or ESR) releases.

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See Cloudflare challenges · Cloudflare Fundamentals docs

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