Outlook Web App: OneView and TrueTime features will retire

OneView and TrueTime features in Outlook Web App will retire between March and June 2026, removing personal account connections and combined calendar views. Users must manually manage calendars afterward. No admin action is needed, but users should be informed and directed to Outlook desktop apps for multi-account support.

[Introduction]
We’re retiring the OneView and TrueTime features from Outlook Web App (OWA). OneView allows users to connect personal email accounts—such as Outlook.com, Gmail, or other IMAP accounts—to their work mailbox in OWA, providing a unified view of multiple inboxes. TrueTime allows users to view personal and work calendars together in OWA for consolidated scheduling. Once these features are retired, users will no longer be able to connect personal accounts or view personal calendar information inside OWA.

[When this will happen:]
This retirement will begin in early March 2026 and complete by late June 2026.

[How this affects your organization:]

Who is affected:

• Users who currently use OneView or TrueTime in OWA.
• Users who have connected work and personal accounts within OWA.

What will happen:

• OneView and TrueTime features will be removed from OWA.
• Users will no longer be able to connect or access personal accounts within OWA.
• Existing connected accounts will be automatically disconnected.
• Users must manually schedule corresponding events across calendars if needed.
• No admin configuration changes are required; the retirement occurs automatically.

[What you can do to prepare:]

• No admin action is required.
• Notify your users about this retirement.
• Update internal helpdesk guidance and documentation.
• Direct users who need multi-account support to Outlook for Windows or Mac.

[Compliance considerations:]
No compliance considerations identified, review as appropriate for your organization.