Is BLE for FIDO2 roaming authenticators still supported in Windows11?

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David Lorenz

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Jan 24, 2025, 3:05:27 PMJan 24

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Hi all,

I have two FDIO2 roaming authenticators.

Feitian K41
SpearID FIDO2 Pro

Both authenticators support BLE transport. On Windows10 I can pair the authenticator with the host PC and then proceed to add a passkey to a relying party without any problem. On Windows11 I am not able to even find the authenticators when they are advertising. Other Bluetooth operations work fine on the Windows11 machines I have tried (3 different machines). The WebAuthn APIs for passwordless authentication on Windows article states, that the platform Webauthn API supports BLE transport on both Windows10 and 11.

One thing I have noticed, when trying to add a passkey to a relying party on Windows10, the popup window states "activate bluetooth on you authenticator or insert authenticator to a USB port", on Windows11 it only says "insert authenticator to a USB port".

What could be the reason, that the authenticators are not found on Windows11?
To me it looks like BLE support on the Windows Webauthn Platform API was dropped on Windows11, can anyone confirm this?

I have asked in the Microsoft Q&A forum and Microsoft Community forum but have gotten no answer. Does anyone here know something about this?

Thanks for your help!

David

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