Microsoft: Security keys may prompt for PIN after recent updates
BleepingComputer
Summary
Microsoft has alerted users that FIDO2 security keys may require a PIN for sign-in following recent Windows updates since September 2025. This change could affect user experience and security practices, particularly for those relying on these security keys for authentication.
Impact
FIDO2 security keys, Windows operating system (updates since September 2025)
In the Wild
Unknown
Timeline
Disclosed on [date]
Remediation
Users should check for the latest Windows updates and follow any guidance provided by Microsoft regarding the use of FIDO2 security keys.