Retirements & deprecations 62 active

Everything Microsoft has announced it is switching off, sorted by the date it stops working. Sourced from the Message Center archive — including posts Microsoft has since expired. Atom feed.

Upcoming deadlines

DeadlineWhat is going awayServices
24 Sep 2026
in 6 days
Microsoft Edge: Retirement of Windows Information Protection (WIP) and Microsoft Defender Application Guard (MDAG)
MC1459132
Microsoft 365 suite
30 Sep 2026
in 12 days
(Updated) Microsoft Exchange Online: Prepare for Exchange Web Services retirement with EWSAllowedAppIDs
MC1447678
Exchange Online
01 Oct 2026
in 13 days
Microsoft Purview | Data Lifecycle Management - Graph API Support for archive mailboxes
MC1469565
Microsoft Purview
01 Oct 2026
in 13 days
Microsoft Publisher: Reminder that support ends in October 2026
MC1469564
Microsoft 365 apps
01 Oct 2026
in 13 days
Project Online Essentials reaches End of Life on October 1, 2026: Action required
MC1466302
Project for the web
01 Oct 2026
in 13 days
Microsoft Teams and Google Calendar sync retirement
MC1462469
Microsoft Teams
01 Oct 2026
in 13 days
(Updated) Migrate Free/Busy, MailTips, and Calendar Sharing before EWS deprecation
MC1446796
Exchange Online
01 Oct 2026
in 13 days
(Updated) Microsoft Teams: Update the Teams mobile app to maintain Calendar functionality
MC1440980
Microsoft Teams
05 Oct 2026
in 17 days
Microsoft Teams: Microsoft Teams live chat retirement
MC1449174
Microsoft Teams
13 Oct 2026
in 25 days
Support for Office LTSC 2021, and additional apps will end on October 13, 2026
MC1472429
Microsoft 365 suite
26 Oct 2026
in 38 days
Microsoft Entra ID: Retirement of custom CSS layout and positioning properties in company branding
MC1458474
Microsoft Entra
02 Nov 2026
in 45 days
(Updated) Outlook for Windows report retirement in the Exchange admin center
MC1230889
Microsoft 365 apps
30 Apr 2027
in 224 days
Microsoft Entra ID: Retirement of Custom Controls in Conditional Access and migration to External MFA
MC1422061
Microsoft Entra
14 Oct 2027
in 391 days
Microsoft Entra ID: Retirement of duplicative properties in passkey (FIDO2) authentication methods policy
MC1188230
Microsoft Entra

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