M365 Changelog: (Updated) New Service Endpoint for Applications using Microsoft Purview Information Protection
MC586566 – Updated June 29, 2023: Microsoft has determined that this message did not reach the intended audience. Please disregard this message. Microsoft apologizes for any inconvenience.
Microsoft is adding a new service endpoint for applications that use Microsoft Purview Information Protection labeling in applications and services. This includes applications like Microsoft 365 Apps, the Azure Information Protection client, and any application using the Microsoft Information Protection SDK.
Note: If your organization does not use Microsoft Purview Information Protection labeling policies, you can safely disregard this message.
When this will happen:
This change will be made beginning in mid-July.
How this affects your organization:
Network configurations will need to be updated to include the host https://substrate.office.com to ensure that apps and services are able to continue to fetch the labeling policy.
What you need to do to prepare:
If your organization uses Microsoft Purview Information Protection labeling policies, review your current configuration and make changes as needed.