Azure AD requires security keys to be protected with a PIN code. The PIN can be set during the enrolment process, or changed later if needed.
You can change or reset the PIN using either a Windows, MacOS or Linux system using the following procedures;
- How to launch the Windows FIDO key Sign-in options
- How to reset FIDO2 security key
- How to set up PIN on a FIDO2 security key
- How to change PIN on a FIDO2 security key
- How to enrol fingerprints on a FIDO2 security key