The Semi-Annual Enterprise Channel Preview for Microsoft 365 Apps ends support on September 9, 2025, with the August 2025 update as the last. Admins must transition devices to Monthly Enterprise or Current Channel, as updates will cease and no automatic changes will occur.
Organizations using explicit domain whitelisting for Microsoft Whiteboard must immediately add whiteboard.svc.cloud.microsoft to their firewall rules to avoid service disruptions, as Whiteboard now operates under the cloud.microsoft domain. No action is needed if *.cloud.microsoft is already whitelisted.
Microsoft Fabric will introduce multitasking improvements in early September 2025, including horizontal tabs, multiple open workspaces with color coding, an Object Explorer, and a raised open item limit. These changes enhance workflow efficiency and apply only to Fabric, not Power BI. No action is needed now.
Microsoft Copilot in Word will add document statistics like author, last modified date, and open count to the Dynamic Document Snapshot’s Activity tab. This feature, rolling out worldwide in September 2025, is on by default, requires no admin setup, and enhances collaboration by providing easy access to document insights.
Microsoft Viva Connections mobile will introduce an AI audio briefing feature providing summaries of top news with playback controls. Available mid-September to November 2025, it requires a Microsoft 365 Copilot license, is on by default, and needs no user configuration.
Starting September 2025, Copilot-licensed users will have their monthly transcription quota increased from 300 to 30,000 minutes in Word and OneNote. The change requires no admin action, applies per user, and may increase AI interaction with customer data without altering data storage or retention policies.
By December 2, 2025, update firewall allowlists to include Azure Front Door IP addresses or the service tag “AzureFrontDoor.MicrosoftSecurity” for Microsoft Intune and Basic Mobility and Security for Microsoft 365. Do not remove existing endpoints; add new ranges from the provided Azure IP range files.
Chromium browsers will restrict local network access, prompting users for permission when accessing OneDrive, SharePoint, and Microsoft Lists. Without configuring the LocalNetworkAccessAllowedForUrls policy to pre-authorize trusted domains, users will face slower performance and loss of offline capabilities. Admins must deploy this policy before the change rolls out in Chromium 141 at September’s end.
We are announcing the ability to use up to 1,000 files per agent for SharePoint and OneDrive uploads in Microsoft Copilot Studio. This feature will reach general availability on October 6, 2025.
I've been working with Microsoft Technologies over the last ten years, mainly focused on creating collaboration and productivity solutions that drive the adoption of Microsoft Modern Workplace.
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