In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary. Jan 22, 2026 - 20:00 UTC
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Title: We're investigating a potential issue affecting Microsoft 365 services User impact: We've received reports of an issue affecting Microsoft 365 services. Current status: We're investigating a potential issue with Microsoft 365 services and checking for impact to your organization. Initial reports indicate possible issues accessing the Microsoft Defender and Microsoft Purview portals, as well as issues using Outlook. We'll provide an update within 30 minutes.
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On January 22, 2025 at 20:17 UTC Proofpoint began experiencing a production service Interruption impacting sending email to Microsoft 365. Customers may experience DSN=4 deferrals when routing emails to Microsoft 365 tenants. Microsoft has acknowledged a service degradation at https://status.cloud.microsoft/ Product: Email delays Symptoms: Emails routed to Microsoft 365 tenants may receive DSN=4 deferrals Active Impact? (Yes) 2026-JAN-22 20:50 UTC Proofpoint cross-functional teams remain on standby. Proofpoint is closely monitoring services.
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Management Infrastructure
Endpoint Security
DNS Services
Microsoft Infrastructure
We're investigating a potential issue affecting Microsoft 365 services
Microsoft 365 suite
Microsoft 365 for the web
Email Security
Hosted Voice Services
