Quote:
Originally Posted by PON
I use Yubikeys with my Fastmail account (1 and a couple of spares) for two-factor authentication.
Works fine with Chrome. If I use Firefox my account behaves as if my preferred authentication is via SMS, which is configured for account recovery purposes.
Anyone else seeing this?
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Try setting
security.webauth.u2f equal to true in website
about:config within Firefox. I don't have fastmail any more, but it works with other 2FA sites.