Viva Engage is aligning community and membership management with the Microsoft Entra model. From late September 2026, users with only the Verified Admin or Network Admin role need Yammer Administrator or Community Admin permissions to perform some actions.
Users with an existing Microsoft 365 Developer subscription are now limited to 10 GB OneDrive storage. This already happened briefly in July, and further tenant reductions may follow.
Copilot Premium users can now use Ask Copilot in Teams messages, which opens the Copilot pane with the selected message content already included.
Starting on 2 November 2026, Microsoft will preconfigure usage-based PAYG billing for new Microsoft 365 Copilot Business purchases via a CSP Partner.
Outlook on the web and the new Outlook for Windows get an optional “Classic Outlook” style. The Classic Outlook style should give users a more familiar look and feel during the transition.
Microsoft is retiring the Microsoft 365 companion apps Calendar, People, and Files. The apps will stop working in December 2026. Admins should uninstall them from managed devices and stop deploying them.
A SharePoint Embedded administrator can now update the PrincipalOwner of user-owned containers. Changing the PrincipalOwner transfers full ownership and prevents the container from being deleted by the previous owner’s account.
Copilot Chat now lets Copilot Premium users interact with shared and delegated mailboxes they already have access to, right from the chat interface. This capability can reduce the time required to review, summarize, and respond to emails while maintaining existing security and governance controls.
Microsoft has introduced a Teams Premium trial offer for eligible organizations, granting a 90-day trial subscription and a potential 50% discount on a one-year Teams Premium subscription for organizations with active Queues app usage.
The new Viva Engage Brand Center lets administrators customize the tenant’s logos, brand name, and theme color across the Engage web and mobile apps.
Microsoft has updated how Teams handles Purview Audit Logs for cross-organization meetings. Compliance administrators in a user’s own organization can now see participation details when that user joins an external meeting, not just administrators in the organization that set up the meeting.
Microsoft has added a new setting that lets organizations in France, Germany, Norway, Sweden, and Switzerland choose whether to store their Microsoft 365 data in-country or within the EU Data Boundary. The setting is off by default. If not updated, Microsoft may store customer data regionally within the EU Data Boundary rather than only in-country.
Microsoft is retiring the Similarity Checker in Word starting October 2027, removing it from the Microsoft Editor experience. Copilot in Word should not be treated as a replacement for the similarity capability.
Microsoft has published a new Planner usage report in the Microsoft 365 admin center, giving administrators visibility into total unique users, daily active user trends, and per-user activity details across Planner Basic and Planner Premium plans.
Microsoft is retiring the Teams-Google Workspace calendar synchronization in October 2026. If users have calendars synced across both products, this connection will stop working, and previously matched calendars will no longer update automatically.
If you cannot find the Org Explorer app in Microsoft 365 Copilot, it may be because of the new copilot.cloud.microsoft domain. The app has not been updated to support it yet.
Microsoft reminds that Microsoft Publisher will be retired on 1 October 2026. Microsoft 365 users will no longer be able to open or edit Publisher (.pub) files.
Microsoft is rolling out the new OneDrive Pay-as-you-go (PAYG) billing service, letting SharePoint administrators extend OneDrive storage beyond a user’s licensed limit, up to 25 TB per account, and pay only for the overage.
Microsoft now lets administrators disable Copilot Chat for all users, or just the Work IQ capabilities for Copilot Premium users.
Microsoft will retire the Admin app in October 2026. The app was designed to help very small businesses manage administrative tasks directly in Teams, Outlook, and Microsoft 365.com.