MC1158256 - Microsoft 365 Apps Current Channel update begins Sept 23, 2025
Based on Microsoft Message Center ID: MC1158256
What's changing
Microsoft released an update for Microsoft 365 Apps on the Current Channel. The rollout begins September 23, 2025 (PST) and will be deployed gradually to users on that channel.
Who is affected
- End users on the Current Channel for Microsoft 365 Apps.
- Admins who manage updates directly rather than using the Office CDN.
- Environments that control updates via Configuration Manager, WSUS, or other deployment tooling.
Why this matters for admins
This update may include security fixes, performance improvements, or feature changes that impact user experience and compatibility. If clients auto-update from the Office Content Delivery Network (CDN), users will receive the update with no admin intervention. If you control distribution, you must plan and deploy the package to avoid unexpected user disruptions.
Recommended admin actions
- Review the release notes for details and known issues: Current Channel release notes.
- Verify which devices are on the Current Channel and confirm their update source (CDN vs managed).
- If you manage updates:
- Download the update and test in a pilot ring before broad deployment.
- Prepare deployment packages for Configuration Manager, WSUS, or your update tool.
- Communicate expected change windows to affected users.
- Monitor telemetry and helpdesk tickets after rollout for regressions or feature impacts.
If you rely on automatic CDN updates, no action is required. If you deploy updates manually, schedule testing and rollout to maintain control over timing and compatibility.
Blog Post Created/Updated on September 24, 2025
This is an independent summary of Microsoft 365 Message Center updates and not an official Microsoft communication. Readers are responsible for any actions taken in their environments.
