| MC1488841 |
(Updated) Microsoft Outlook: Update to default blocked file types in OwaMailboxPolicy
4 · Medium
Exchange Online
Major
|
Plan for change |
10 Nov 2026 |
—
|
| MC1506730 |
(Updated) Classic Outlook for Windows: Upcoming visual improvements and a more consistent Outlook experience
Exchange Online
|
Plan for change |
09 Nov 2026 |
—
|
| MC1446796 |
(Updated) Migrate Free/Busy, MailTips, and Calendar Sharing before EWS deprecation
8 · Critical
Exchange Online
Major
|
Plan for change |
09 Nov 2026 |
01 Oct 2026
|
| MC1492166 |
(Updated) Microsoft Outlook: New event duplication capability
Exchange Online
|
Stay informed |
06 Nov 2026 |
—
|
| MC1519843 |
(Updated) New Outlook for Windows: All Accounts view brings email into a single inbox view
Exchange Online
|
Stay informed |
06 Nov 2026 |
—
|
| MC1193692 |
(Updated) Microsoft 365: Enrich profile cards with custom properties from third-party systems
Exchange Online
|
Stay informed |
06 Nov 2026 |
—
|
| MC1540345 |
Action required: Update permissions for Exchange Online Admin API
5 · High
Exchange Online
Major
|
Plan for change |
05 Nov 2026 |
—
|
| MC1540342 |
Action required: Exchange Online Admin API MailboxFolderPermission response update
Exchange Online
|
Plan for change |
05 Nov 2026 |
—
|
| MC1539000 |
Microsoft Outlook: Search within a selected folder
Exchange Online
|
Stay informed |
05 Nov 2026 |
—
|
| MC1245222 |
(Updated) Outlook: Share Word, Excel and PowerPoint local files via the new Outlook for Windows
Exchange Online
|
Stay informed |
04 Nov 2026 |
—
|
| MC1528007 |
Join button will require HTTPS meeting links
Exchange Online
|
Plan for change |
27 Oct 2026 |
—
|
| MC1510951 |
(Updated) Windows updates are available for 2026 time zone changes in Canada
5 · High
Exchange OnlineMicrosoft 365 suiteDynamics 365 AppsPower BI
Major
|
Prevent or fix issue |
27 Oct 2026 |
—
|
| MC1526668 |
Change Optics Report
Exchange Online
|
Stay informed |
26 Oct 2026 |
—
|
| MC1441784 |
(Updated) Microsoft Copilot for Outlook: New Copilot entry point in Classic Outlook
Exchange Online
|
Plan for change |
26 Oct 2026 |
—
|
| MC1472028 |
(Updated) Outlook: Change the organizer of meetings
Exchange OnlineMicrosoft 365 suite
|
Stay informed |
26 Oct 2026 |
—
|
| MC1505607 |
(Updated) Outlook: Reply With a Template in Rules
Exchange Online
|
Stay informed |
26 Oct 2026 |
—
|
| MC1519861 |
(Updated) Outlook: Copilot Prioritize feature will be retired
Exchange Online
|
Plan for change |
22 Oct 2026 |
—
|
| MC1458484 |
Filter Messages by Events on Outlook Mobile
Exchange Online
|
Stay informed |
21 Oct 2026 |
—
|
| MC1515939 |
Sending from Aliases
Exchange Online
|
Plan for change |
19 Oct 2026 |
—
|
| MC1515932 |
External Recipients Banner on Outlook Mobile
Exchange Online
|
Stay informed |
19 Oct 2026 |
—
|
| MC1191578 |
(Updated) Update to EWS Access for Kiosk / Frontline Worker Licenses
4 · Medium
Exchange Online
Major
|
Plan for change |
16 Oct 2026 |
—
|
| MC1511072 |
Microsoft Teams: Upcoming change to voicemail message delivery by email
4 · Medium
Exchange OnlineMicrosoft Teams
Major
|
Plan for change |
16 Oct 2026 |
—
|
| MC1511071 |
Action required: Review property changes for Exchange Online scenarios
9 · Critical
Exchange Online
Major
|
Plan for change |
16 Oct 2026 |
15 Nov 2026
|
| MC1509800 |
Microsoft Outlook for Android: Multi-select and bulk actions in search results
Exchange Online
|
Stay informed |
15 Oct 2026 |
—
|
| MC1493186 |
Microsoft Outlook for Android and iOS: Send Availability functionality restored
Exchange Online
|
Stay informed |
09 Oct 2026 |
—
|
| MC1492954 |
Microsoft Outlook: Themes by Copilot retirement
5 · High
Exchange Online
Major
|
Plan for change |
09 Oct 2026 |
—
|
| MC1465780 |
(Updated) Outlook for iOS and Android: Automatically apply email sensitivity labels from labeled attachments
Exchange OnlineMicrosoft Purview
|
Stay informed |
07 Oct 2026 |
—
|
| MC1490899 |
Microsoft 365: Targeted Release retirement
8 · Critical
Exchange OnlineMicrosoft 365 suiteSharePoint OnlineMicrosoft OneDriveMicrosoft Teams
Major
|
Plan for change |
07 Oct 2026 |
31 Oct 2026
|
| MC1479509 |
(Updated) Spell check before sending emails in new Outlook
Exchange Online
|
Plan for change |
06 Oct 2026 |
—
|
| MC1479516 |
(Updated) Microsoft Outlook: Link preview retirement
Exchange Online
|
Stay informed |
06 Oct 2026 |
—
|
| MC1472022 |
(Updated) [Outlook Mac] Purview Data Loss Prevention support for Calendar Events
Exchange OnlineMicrosoft Purview
|
Stay informed |
06 Oct 2026 |
—
|
| MC1472023 |
(Updated) [Outlook Mobile] Purview Data Loss Prevention support for Calendar Events
Exchange OnlineMicrosoft Purview
|
Stay informed |
06 Oct 2026 |
—
|
| MC1472019 |
(Updated) [Outlook Mac] Purview DLP Wait-on-Send Support
Exchange OnlineMicrosoft Purview
|
Stay informed |
06 Oct 2026 |
—
|
| MC1472021 |
(Updated) [Outlook Mobile] Purview DLP Wait-on-Send Support
Exchange OnlineMicrosoft Purview
|
Stay informed |
06 Oct 2026 |
—
|
| MC1465779 |
(Updated) Outlook for Mac: Sensitivity label recommendations and auto-labeling from attachments
Exchange OnlineMicrosoft Purview
|
Stay informed |
06 Oct 2026 |
—
|
| MC1338816 |
(Updated) New Outlook for Windows becomes available for GCC High and DoD
3 · Medium
Exchange Online
Major
|
Plan for change |
05 Oct 2026 |
—
|
| MC1485120 |
(Updated) Outlook (new): Right-click to customize the classic ribbon
Exchange Online
|
Stay informed |
05 Oct 2026 |
—
|
| MC1485116 |
Microsoft Exchange Online: Exchange Web Services (EWS) enforcement update for EWSAllowedAppIDs
Exchange Online
|
Stay informed |
01 Oct 2026 |
—
|
| MC1483974 |
Action Required: Upgrade ExchangeOnlineManagement PowerShell Module to Version 3.10.1 or Later
7 · High
Exchange Online
Major
|
Plan for change |
30 Sep 2026 |
26 Mar 2027
|
| MC1472591 |
(Updated) Enhanced security and access controls for Outlook attachments
Exchange Online
|
Stay informed |
29 Sep 2026 |
—
|
| MC1458470 |
(Updated) Simplified Copilot experience in Microsoft Outlook
Exchange Online
|
Stay informed |
29 Sep 2026 |
—
|
| MC1479513 |
Outlook: Insert Symbols
Exchange Online
|
Plan for change |
25 Sep 2026 |
—
|
| MC1469960 |
(Updated) Microsoft Exchange Online: Review and configure EWSAllowedAppIDs before Exchange Web Services access changes
3 · Medium
Exchange Online
|
Prevent or fix issue |
18 Sep 2026 |
—
|
| MC1472598 |
Microsoft 365: Find more actions in the suite header menu
Exchange Online
|
Plan for change |
15 Sep 2026 |
—
|
| MC1093912 |
(Updated) Microsoft Outlook for iOS/Android: Improved Contacts with profile enrichment and duplicate management
Exchange OnlineMicrosoft 365 apps
|
Stay informed |
14 Sep 2026 |
—
|
| MC1470883 |
Microsoft Outlook for iPad: Minimize email drafts and return to them later
Exchange Online
|
Stay informed |
11 Sep 2026 |
—
|
| MC1454996 |
(Updated) Copilot Chat can float over your Outlook iPad and Mac window
Exchange Online
|
Stay informed |
11 Sep 2026 |
—
|
| MC1437668 |
(Updated) Microsoft Outlook for iOS and Android: Insert signature images from OneDrive
Exchange Online
|
Stay informed |
28 Aug 2026 |
—
|
| MC1462923 |
Outlook for iOS: Minimum system requirements updated to iOS 26 and above
Exchange Online
|
Plan for change |
27 Aug 2026 |
—
|
| MC1462922 |
Admin app retiring in Teams, Outlook and Microsoft365.com
5 · High
Exchange OnlineMicrosoft 365 suiteMicrosoft Teams
Major
|
Plan for change |
27 Aug 2026 |
—
|
