Important notice
Resetting the security key (your Cryptnox FIDO2 card) returns the device to factory defaults and deletes all credentials and account registrations stored on the card. If you use the card to sign into websites, Microsoft accounts, or other services, those registrations will stop working until you re-enroll the key with each service. Enroll a back up card or an alternative solution before you reset, to maintain access to your websites or devices
No setup required
Windows provides built-in management for FIDO2 / security keys. You do not need extra drivers — just have a compatible Smart Card Reader connected and your Cryptnox FIDO2 card ready
Note: this Settings flow is available on Windows versions that support built-in security key management (Windows 10 1903+ / Windows 11)
Step 1
Go to Settings → Accounts → Sign-in options
Scroll down until you find the Security key under the list of sign-in methods
Click on “Manage” to open the Windows security key management window
Step 2
When prompted, tap your Cryptnox FIDO2 card on the NFC reader, extract or insert it into a contact reader, or click the Fido2 button if using the Cryptnox “Click to Tap” contact reader to continue
Once confirmed, the Security Key Settings screen will appear with options such as Change PIN, and Reset
Step 3
On the Security Key Settings screen, select “Reset Security Key”.
After that, the system will ask you to tap / extract – insert or click twice on the reader for verification
Next, Windows will display a warning message indicating that all credentials on the key will be permanently deleted; and confirm the action by clicking “Proceed”
Wait until Windows completes the process
Step 4
When the process finishes, Windows will confirm that your security key has been reset Click “Done” to exit the dialog
Your Cryptnox FIDO2 card is now restored to factory settings and ready for a new setup.
