Microsoft 365 has a Multi-Factor Authentication (MFA) failure that, according to user reports, blocks users access to multiple of Microsoft 365 services, such as Office 365 and Azure.
“Users may not receive authentication requests through their authenticator application, SMS or telephone calls,” said Microsoft on the health status page of the Microsoft 365 Program.
“If this problem is routed via the affected network, it may affect any of the users.” Microsoft 365 is a software program that bundles Windows 10 (Office 365) and EMS (Enterprise Mobility + Security short) services and provides customers with a secure online collaboration platform.
Because Microsoft 365 is an online platform, it also has its downsides, one of which is that most if not all customers encounter issues affecting one of the services offered as a Cloud product.
Microsoft 365 users in the United States have been affected the most
According to the website Downdetector of the online service failure identification this Microsoft 365 authentication error incident mainly affects U.S. customers, as shown in the real-time outage map below.
Microsoft 365 outage map
“Admins that can not access the admin center can find MFA error notifications for MO193431 through https:/status.office.com,” tweeted the official Microsoft Twitter account which offers information on Microsoft 365 services incidents.
We are reviewing system logs to find the source of the problem. We will keep posting up-dates via MO193431 and http:/status.office.com. “Microsoft is currently examining authentication logs in an attempt to isolate the cause behind the authentication error of Microsoft 365, which has affected the users for the time being.
The Office 365 and Azure applications were impacted by the MFA outage
Although Microsoft says that this issue currently affects only the administration center, user reports state that Office 365 and Azure users are affected, whereas others say that “AlL MFA users can not sign up for ANY Microsoft 365 services.” As an alternative to administrators who can’t log in due to this failure, according to Office 365 MVP Brian Reid, they can sign in where MFA doesn’t (trust) apply.