Multi-factor authentication in the Microsoft ecosystem

Security has always been a top priority for Microsoft. With the rise of sophisticated cyber threats, Microsoft has evolved its authentication protocols to better protect users across its cloud ecosystem - including Microsoft Dynamics 365 and Microsoft 365. At TVT, we help businesses stay secure and compliant by embracing modern authentication methods like Multi-Factor Authentication (MFA).

From basic to modern authentication

For years, Microsoft applications relied on Basic Authentication, which involved sending a username and password with every request. While simple to set up, this method became increasingly vulnerable to attacks. In response, Microsoft deprecated Basic Authentication for key services like Exchange Online starting October 2022.

Modern Authentication replaces Basic Authentication with more secure methods, including Multi-Factor Authentication (MFA), smart card authentication, and OAuth-based authorisation. It also supports conditional access policies through Microsoft Entra ID (formerly Azure Active Directory).

What is Multi-Factor Authentication?

MFA adds an extra layer of security by requiring users to provide two or more forms of identification during sign-in. This could be a password plus a code sent to a mobile device, or a biometric scan like a fingerprint or facial recognition.

How Microsoft Entra ID MFA works

Microsoft Entra ID MFA works by requiring a combination of the following authentication factors:

Something you know (e.g., a password)
Something you have (e.g., a trusted device or hardware key)
Something you are (e.g., biometric data)

Benefits of MFA for Business Central users

Implementing MFA helps protect sensitive business data, reduces the risk of unauthorised access, and supports compliance with industry regulations. For users of Business Central and other Microsoft cloud services, MFA is a simple yet powerful way to enhance security.

Why trust TVT with your Microsoft security journey?

At TVT, we specialise in safeguarding your business with proven expertise in Microsoft cloud security. Our team guides you through every step of implementing Multi-Factor Authentication and Modern Authentication, ensuring your data stays protected and your users stay productive. With TVT, you benefit from hands-on support, tailored training, and ongoing advice—so you can focus on growth, knowing your security is in expert hands.

Frequently Asked Questions

What is Multi-Factor Authentication (MFA)? MFA is a security process that requires users to provide two or more forms of identification during sign-in, such as a password and a code sent to their mobile device.

Why did Microsoft deprecate Basic Authentication? Basic Authentication was vulnerable to cyberattacks. Microsoft replaced it with Modern Authentication methods to improve security across its cloud services.

What is Microsoft Entra ID? Microsoft Entra ID (formerly Azure Active Directory) is Microsoft’s cloud-based identity and access management service used to secure access to Microsoft cloud applications.

How does MFA improve security? MFA reduces the risk of unauthorised access by requiring multiple forms of verification, making it harder for attackers to compromise accounts.

Is MFA mandatory for Business Central users? While not always mandatory, Microsoft strongly recommends enabling MFA for all users to protect sensitive business data and ensure compliance.