Hello, thank you for reaching out to Microsoft Q&A.
May I please know if you have any other Verification methods, such as phone number or email address, to Verify Your Identity instead of using the 'Passkey'?
- Please select "Choose a different password" and sign in using your account password. You can then complete the verification process using your alternate security contact methods, such as your registered phone number or recovery email.
If you continue to experience issues with passkey sign-in, you may try deleting the passkey saved for this account in 1Password, then sign in again on Windows.
You can then set up the passkey for your Microsoft account again.
Important - Deleting a passkey will not delete your account. Before removing it, make sure you have alternative security verification methods, such as a phone number or email address, that are active on your Microsoft account. This will allow you to verify your identity by sending a verification code to any one of these methods.