Microsoft 365 changes for IT admins
Vendor-announced Microsoft 365 retirements, end-of-support dates, and admin-impact changes — normalized, dated, and verified against official sources.
Upcoming changes
Entra ID makes passkeys the default and retires Microsoft-provided SMS/voice MFA
From September 1, 2026 Entra ID auto-enables passkeys for SMS/voice MFA users; Microsoft-provided SMS and voice retire on February 1, 2027.
Project Online retires on September 30, 2026
Microsoft retires Project Online on September 30, 2026. Project Web App sites and data become unavailable, so migrate projects before then.
Exchange Web Services (EWS) starts being disabled in Exchange Online
Microsoft starts disabling EWS in Exchange Online in October 2026, with full shutdown in April 2027. Migrate EWS apps to Microsoft Graph.
Microsoft Publisher retires from Microsoft 365 on October 1, 2026
Microsoft 365 subscribers lose access to Publisher on October 1, 2026. Convert .pub files to PDF or Word before the retirement date.
Microsoft Teams live chat widget retires on October 5, 2026
Microsoft Teams live chat is retired on October 5, 2026. Remove the live chat widget from websites and move to a supported engagement tool.
Already in effect
Windows 10 reached end of support on October 14, 2025
Windows 10 reached end of support on October 14, 2025. Devices get no more security updates unless enrolled in Extended Security Updates.
Visio 2016 and Visio 2019 reached end of support on October 14, 2025
Visio 2016 and Visio 2019 reached end of support on October 14, 2025. The apps keep working but receive no more security updates.
Skype for Business Server 2015 and 2019 reached end of support on October 14, 2025
Skype for Business Server 2015 and 2019 reached end of support on October 14, 2025. Plan migration to Teams or a supported platform.
Project 2016 and Project 2019 (desktop) reached end of support on October 14, 2025
Project 2016 and Project 2019 desktop reached end of support on October 14, 2025. The apps keep working but get no security updates.
Office 2016 and Office 2019 reached end of support on October 14, 2025
Office 2016 and Office 2019 reached end of support on October 14, 2025. The apps keep working but receive no more security updates.
Exchange Server 2016 and 2019 reached end of support on October 14, 2025
Exchange Server 2016 and 2019 reached end of support on October 14, 2025. Migrate to Exchange Server SE or Exchange Online.
Consumer Skype retired on May 5, 2025
Consumer Skype retired on May 5, 2025. Users should move to free Microsoft Teams or export their Skype data before it is removed.
AzureAD and MSOnline PowerShell modules deprecated and retiring
The MSOnline and AzureAD PowerShell modules are deprecated and retiring in 2025. Migrate scripts to Microsoft Graph PowerShell.
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