Message Center
Notices Microsoft posts in the Microsoft 365 admin center, with the changes this installation saw between versions. Collected today · Observed across 2 reference Microsoft 365 tenants (Reference tenant (MVP); Reference tenant (Evotec)); each notice shows how many of them returned it. Verify applicability in your own tenant's Message Center.
Reference-tenant versions are captured by this deployment; archive versions use the archive's own capture times. Earlier notices and versions may be missing.
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9 notices
Order: changed · 4852 in the published population- MC1515917 Database Hub in Fabric: Default enablement and admin opt-out Returned by 2 reference tenants · Corroborated by Microsoft 365 Message Center Archive by Merill FernandoPlan for change · Power BI · changed 19 Oct 2026Act by 17 Nov 2026 · in 22 days
- MC1511071 Action required: Review property changes for Exchange Online scenarios Returned by 2 reference tenants · Corroborated by Microsoft 365 Message Center Archive by Merill FernandoPlan for change · Exchange Online · changed 16 Oct 2026Act by 15 Nov 2026 · in 20 days
- MC1490899 Microsoft 365: Targeted Release retirement Returned by 2 reference tenants · Corroborated by Microsoft 365 Message Center Archive by Merill FernandoPlan for change · Exchange Online · Microsoft 365 suite · SharePoint Online · changed 7 Oct 2026Act by 31 Oct 2026 · in 5 days
- MC1488834 Microsoft Entra ID: Final reminder to replace MemberOf rule operator configurations by November 3, 2026 Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Plan for change · Microsoft Entra · changed 5 Oct 2026Act by 3 Nov 2026 · in 8 days
- MC1392568 Microsoft Defender for Endpoint: Support for Amazon Linux 2 (ARM64) retiring October 31, 2026 Returned by 2 reference tenants · Corroborated by Microsoft 365 Message Center Archive by Merill FernandoPlan for change · Microsoft Defender XDR · changed 23 Sep 2026 · 2 versions seenAct by 31 Oct 2026 · in 5 days
- MC1230889 (Updated) Outlook for Windows report retirement in the Exchange admin center Returned by 2 reference tenants · Corroborated by Microsoft 365 Message Center Archive by Merill FernandoPlan for change · Microsoft 365 apps · changed 28 Aug 2026 · 4 versions seenAct by 2 Nov 2026 · in 7 days
- MC1458474 Microsoft Entra ID: Retirement of custom CSS layout and positioning properties in company branding Returned by 2 reference tenants · Corroborated by Microsoft 365 Message Center Archive by Merill FernandoPlan for change · Microsoft Entra · changed 21 Aug 2026Act by 26 Oct 2026 · today
- MC1448379 Microsoft Entra ID: Replace MemberOf rules by November 3, 2026 Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Plan for change · Microsoft Entra · changed 5 Aug 2026Act by 3 Nov 2026 · in 8 days
- MC1325414 (Updated) Microsoft Entra ID SSPR will require registered authentication methods starting November 9, 2026 Returned by 2 reference tenants · Corroborated by Microsoft 365 Message Center Archive by Merill FernandoPlan for change · Microsoft Entra · changed 4 Aug 2026 · 6 versions seenAct by 6 Nov 2026 · in 11 days