Planned Maintenance: Windows 365 Service

Microsoft will perform a 2-hour maintenance on January 17, 2026, at 6:00 AM UTC for the Windows 365 alerting service in North America, causing temporary delays in alert creation and notifications. Existing alerts remain visible, and further details will be provided 5 days prior.

To improve security, operational efficiency, and reliability, Microsoft will perform planned maintenance on the Windows 365 alerting service in the North America region. This work is scheduled during non-peak hours to help minimize potential impact. Specific dates and times will follow in subsequent communication 5 days prior to your scheduled maintenance

Maintenance Schedule:

• Start: January 17, 2026, 6:00 AM UTC
• End: January 17, 2026, 6:00 AM UTC

[How this will affect your organization:]

• During this 2-hour maintenance window, admins will be unable to create or edit alert rules, and new alerts or notifications may be delayed. Existing alerts will remain visible, and remediation actions can still be taken as needed.
• If your organization does not use Windows 365 alerting, no impact is expected.

[What you need to do to prepare:]

This message is a notice that this change is coming in about a month. We’ll post another message 5 days before this maintenance window for your planning purposes. Because the maintenance is scheduled outside typical business hours, we expect minimal disruption. We recommend informing your helpdesk of the maintenance window and the possibility of delayed Windows 365 alert notifications during this period.