MFA Security Issues

Fix 1Password Passkey Registration Failure in Microsoft 365

Maira Mehtab Sep 22, 2026 868 views

Question details

The user is unable to register a 1Password passkey for their Microsoft 365 account, encountering an error at the final setup step.

Product: Microsoft 365 / Entra ID
Device & OS: not provided
Scenario: Attempting to add a 1Password passkey as a multi-factor authentication method to a Microsoft 365 account.
Observed behavior: Registration fails at the final naming step with a 'Passkey not registered' error message and a correlation ID.

Before you start

Ensure you have the contact information for your organization's IT administrator, as fixing Entra ID passkey permissions requires admin privileges.

Solution 1Recommended

Verify Passkey Settings in Microsoft Entra Admin Center

Check with your administrator to ensure that passkeys (FIDO2 security keys) are enabled for your account or tenant.

Microsoft 365 requires specific permissions to allow users to register passkeys. If the FIDO2 authentication method is disabled in the tenant's Entra ID settings, the registration will fail with a 'Passkey not registered' error.

Contact your IT Administrator

Reach out to the person who manages your organization's Microsoft 365 accounts.

Access Entra Admin Center

Ask the administrator to sign in to the Microsoft Entra admin center.

Enable FIDO2 Security Keys

The admin should navigate to Identity > Protection > Authentication methods > Policies, and verify that the 'FIDO2 security key' option is enabled for your user account or the entire organization.

Propagation Time: Once the administrator enables the policy, it may take a few minutes for the changes to propagate before you can successfully register your 1Password passkey.

Solution 2

Open a Microsoft Support Service Request

If passkeys are already enabled but the issue persists, your administrator needs to contact Microsoft backend support for advanced troubleshooting.

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Frequently Asked Questions

What does 'Passkey not registered' mean in Microsoft 365?

This error typically indicates that your Microsoft Entra ID tenant does not have FIDO2 security keys (passkeys) enabled for your user account, blocking the registration attempt.

Can I fix the passkey registration error myself?

Usually not. You will need your organization's IT administrator to grant permissions and enable FIDO2 authentication policies in the Microsoft Entra admin center.

Does this registration failure only happen with 1Password?

No. This Entra ID configuration issue can block the registration of any FIDO2 security key or passkey (such as YubiKeys or Apple/Google passkeys), not just those managed by 1Password.

Why do I need a passkey for my Microsoft 365 account?

Passkeys provide a highly secure, phishing-resistant form of multi-factor authentication (MFA) that allows you to sign in safely without having to type or remember a password.

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