Message Center
Notices Microsoft posts in the Microsoft 365 admin center, with the changes this installation saw between versions. Collected today from Observed in a reference Microsoft 365 tenant (Reference tenant (MVP)). Verify applicability in your own tenant's Message Center..
Versions captured by this deployment. Earlier versions and notices may be missing; first observed is not first published.
7Action dates in the next 30 days
9Prevent or fix issues
404Rolling out or changing
47Updated after first seen
Showing Exchange Online only · all services
14 notices
Newest change first- Plan for change · Exchange Online · changed 20 Oct 2026 · 2 versions seenAct by 1 Oct 2026 · 19d ago
- Plan for change · Exchange Online · changed 16 Oct 2026Act by 15 Nov 2026 · in 26 days
- Plan for change · Exchange Online · changed 9 Oct 2026
- Plan for change · Exchange Online · Microsoft 365 suite · SharePoint Online · changed 7 Oct 2026Act by 31 Oct 2026 · in 11 days
- Stay informed · Exchange Online · changed 6 Oct 2026
- MC1485116 Microsoft Exchange Online: Exchange Web Services (EWS) enforcement update for EWSAllowedAppIDsStay informed · Exchange Online · changed 1 Oct 2026
- MC1483974 Action Required: Upgrade ExchangeOnlineManagement PowerShell Module to Version 3.10.1 or LaterPlan for change · Exchange Online · changed 30 Sep 2026Act by 26 Mar 2027 · in 5 months
- Plan for change · Exchange Online · Microsoft 365 suite · Microsoft Teams · changed 27 Aug 2026
- Plan for change · Exchange Online · changed 24 Aug 2026Act by 30 Sep 2026 · 20d ago
- Plan for change · Exchange Online · changed 11 Aug 2026
- MC1248389 (Updated) Retirement of -Credential parameter when connecting to Exchange Online PowerShellPlan for change · Exchange Online · changed 15 Jul 2026
- Plan for change · Exchange Online · changed 7 Jul 2026Act by 31 Jul 2026 · 81d ago
- Plan for change · Exchange Online · changed 5 Feb 2026
- Plan for change · Exchange Online · changed 18 Apr 2025