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The original was posted on /r/firefox by /u/legrenabeach on 2023-10-21 19:02:40+00:00.

For the past couple of weeks I’ve got this problem where if I use any Yubikey as 2FA, tapping it just fills in Firefox’s search box with a one-time password, instead of completing login using FIDO.

This only happens on Windows. On Linux (still Firefox) it works as expected.

Has anyone experienced this or have any idea how to fix it?