Microsoft has issued a warning regarding an ongoing issue with Multi-Factor Authentication (MFA) that is impacting some Microsoft 365 (M365) users.
The problem, which surfaced earlier today, is preventing affected users from accessing certain M365 applications, raising concerns for businesses and individuals who rely on these services for essential operations.
Microsoft flagged the issue via its official MSFT365 Status account on X stating:
“We’re investigating an issue in which Multi-Factor Authentication (MFA) may prevent users from accessing some Microsoft 365 (M365) Apps. We’ve redirected affected traffic and service availability is improving.”
The post further advised administrators to refer to incident ID OP978247 within the Microsoft admin center for detailed updates and support.
Microsoft Warns of MFA Issue
Multi-factor authentication has become a cornerstone of digital security, requiring users to verify their identities with an additional layer of authentication, such as a text message, phone call, or app verification, after entering their password.
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However, the current issue appears to be causing disruptions in this critical step, thereby restricting access to apps like Outlook, Teams, SharePoint, and others under the M365 umbrella.
While the exact cause of the problem has not yet been disclosed, Microsoft revealed that traffic redirection efforts are underway, and initial signs of service improvement have been observed.
The outage is likely to create challenges for organizations that depend heavily on M365 services for day-to-day communication, collaboration, and workflows.
Users attempting to log in with MFA-enabled accounts may find themselves locked out, potentially disrupting meetings, emails, and document sharing.
For IT administrators, the situation adds pressure as they navigate workarounds to keep their teams connected while keeping security protocols intact.
Businesses handling sensitive data may be especially cautious during this period, as MFA is a critical safeguard against unauthorized access.
Microsoft has assured its users that it is actively investigating the issue and is working on mitigating its impact. The company advises affected users to monitor the Microsoft 365 admin center for the latest updates on OP978247.
Microsoft’s prompt response, including traffic redirection, has reportedly improved the availability of certain services, though users are encouraged to plan for potential delays while Microsoft resolves the issue completely.
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