Log in to your Adobe Account by supplying your username into the logon screen, but when prompted for your password, click on the option "Sign in with passkey";

Insert you Fido2 key into an available USB port,  Select "Security key";

Click , and you will prompted to enter the PIN code for your Fido key;

At the "Security key PIN" prompt, supply the PIN code for your Fido2 key, then click .

#

You will now be asked to touch the Fido2 key (in the case of a Fido key with a fingerprint reader you will need to swipe your finger on the key);

Once the key has been touched you will be logged in to your Adobe account.