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X.com YubiKey login error message showing 'You must re-enroll your YubiKey' with DownDetector spike chart

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4 min read

LarsNov 12, 2025

X.com YubiKey Login Issue: Why Users Can't Access Their Accounts

A major security key authentication failure is preventing X.com users from logging in. Here's what we know about the YubiKey re-enrollment issue and what affected users should do.

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