How to Disable Two-Factor Authentication (2FA) for All Users in Microsoft 365 by Turning Off Security Defaults

Warning: Disabling two-factor authentication (2FA) is not recommended, as it greatly reduces the security of your Microsoft 365 environment. 2FA is a critical security feature that adds an extra layer of protection to user accounts by requiring a second form of verification, which can help prevent unauthorized access. Turning off 2FA increases the risk of data breaches, especially with sensitive information and email communication. Proceed only if absolutely necessary, and consider alternative security measures to mitigate potential risks.

Step 1: Log in to Azure Active Directory

1. Go to the Azure portal.
2. Use your admin credentials to log in.

Step 2: Access Azure Active Directory Settings

1. Once logged in, go to Azure Active Directory in the left-hand menu.
2. Under Manage, select Properties.

Step 3: Open Security Defaults

1. Scroll down to find the Manage Security Defaults section.
2. Select Manage security defaults to open the configuration settings.

Step 4: Disable Security Defaults

1. In the Enable Security Defaults section, you’ll see a toggle switch.
2. Switch the toggle from Yes to No to disable Security Defaults.
3. Review the implications, as disabling Security Defaults removes several key security features, including 2FA for users.
4. Click Save to apply the change.

Important Considerations

• Alternative Security Options: If you must disable 2FA, consider enabling Conditional Access policies to enforce more customized security requirements.
• User Awareness: Inform your users that 2FA is no longer enforced and educate them on secure password practices to minimize the security risks.
• Regular Reviews: Periodically review and assess the security needs of your organization. Re-enabling Security Defaults when no longer needed can help reinforce a secure environment.

Disabling 2FA by turning off Security Defaults should be approached with caution, and only when absolutely necessary, as it leaves user accounts and organizational data more vulnerable to security breaches.