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Exchange Online – Basic Authorisation Vs Multifactor Authentication

Multifactor Authentication - MFA - Calibre One

Microsoft have announced that they are restarting their program to end the use of Basic Auth in Exchange Online. From October 1st 2021, Microsoft will begin to disable Basic Auth in all tenants, regardless of usage.

How will this affect your business?

If you receive a Message Centre post between now and Oct 2022, informing you that Microsoft is going to disable Basic Auth for a protocol due to non-usage, or you get one saying they know you are using Basic Auth, but they intend to proactively disable it for a short period of time, and you don’t want us to disable specific protocols, you can use the new self-service feature in the Microsoft 365 admin centre to opt-out and request that they leave specific protocols enabled until October 2022. Microsoft added this feature to help minimize disruptions as you transition away from using Basic Auth.

Microsoft are going to disable Basic Authentication at the beginning of October 2022, once this happens your tenant will be unable to access their Exchange Online mailbox using Basic Authentication.

What is Multifactor Authentication (MFA)?

Multifactor Authentication (MFA) - Calibre One

Basic Authentication is when you sign in with just a username and password. Unfortunately, this is not very secure as people tend to pick simple, easy to remember passwords for multiple sites.

Compromised passwords are one of the most common ways that hackers can get at your data, your identity, or your money. Using multifactor authentication, is one of the easiest ways to make it a lot harder for them

This is why most online services like your bank have added “Two-Step-Verification” or “Multifactor Authentication” to make your accounts more secure. You need a second factor when signing in to prove who you are.

There are free apps like Microsoft Authenticator you can use as your second factor of authentication. You open the app, and it shows you a dynamically created 6-digit number which is unique every time. You type it in when prompted, after your username and password.

Multifactor Authentication (MFA) - Calibre One

Don’t Wait!

We don’t recommend waiting until Microsoft turns off Basic Authentication to enable MFA. Act now to secure your business.

The team at Calibre One are always here to help if you don’t know how to set this up.

Contact us (link and book a time for one of our team members to come and talk to you further about securing your business using MFA and more.

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