Microsoft 365 Services Down in South America Due to Regional Outage

Microsoft is addressing a regional outage affecting multiple Microsoft 365 services in South America. The issue, tracked as MO1457636, began at 2:34 p.m. UTC on August 19, 2026 (8:04 p.m. IST).

Tenant administrators can view the incident in the Microsoft 365 admin center Service Health dashboard.

The impact statement is broad, indicating users may be unable to use multiple services such as email, meetings, and file access due to a suite-scoped degradation of the Microsoft 365 suite.

Microsoft has not yet identified every broken workload or listed affected countries within the region. Organizations in Brazil, Argentina, Chile, Colombia, and neighboring markets should treat any sudden inability to open Microsoft 365 as part of this incident until Service Health says otherwise.