Issues with MFA for on-premises users(Office 365)

[chris11256]

Just had a notification for this:

 

Title: Issues with Multi-Factor Authentication (MFA) for on-premises users User Impact: On-premises users may be unable to access Microsoft 365 services due to being unable to log in through MFA.

Current status: We've identified 503 errors from specific processing components and we're reviewing these errors to identify the source.

Scope of impact: This issue could potentially affect any user if they leverage MFA and either Network Policy Server (NPS) or Active Directory Federation Services (ADFS) to access Microsoft 365 services. This issue only affect on-premises users, and cloud hosted users are not affected. Next update by: Tuesday, September 28, 2021, 5:30 PM (4:30 PM UTC)

 

Just a headsup in case anyone is impacted.