Keyboard Setup Assistant opens on your Mac when inserting a YubiKey


Symptoms

When inserting a YubiKey into your Mac's USB port, the Keyboard Setup Assistant opens.

Keyboard Setup Assistant window in macOS with a message stating that the Yubico device cannot be identified, with options for "Quit" and "Continue"

Cause

To allow the YubiKey to be compatible across multiple hardware platforms and operating systems, the YubiKey appears as a USB keyboard to the operating system. The first time you insert a YubiKey, the Keyboard Setup Assistant may open.

Resolution

No action is necessary. Simply close the Keyboard Setup Assistant.

For more details, please view the Yubico support article The YubiKey as a keyboard.

Outcome

You can use your YubiKey for multifactor authentication.