💡 Our Technical Review in summary
- Microsoft has announced the retirement of the OneView and TrueTime features from the Outlook Web App (OWA).
- OneView is the feature that allows users to integrate personal email accounts (Outlook.com, Gmail, IMAP) into their work mailbox for a unified view.
- TrueTime is the feature that enables the consolidation of personal and work calendars for unified scheduling.
- The rollout for this retirement is scheduled to begin in early March 2026 and is expected to be completed by late June 2026.
#### Impact
- End of Multi-Account Integration: Users will no longer be able to connect or manage personal email accounts directly within the OWA interface.
- Loss of Unified Calendar View: The ability to view personal and work calendar events simultaneously within OWA will be removed, requiring users to manage calendars separately.
- Automatic Disconnection: Any currently connected personal accounts will be automatically disconnected once the retirement takes effect.
- Workflow Disruption: Users who rely on OWA as a single pane of glass for both professional and personal schedules will need to revert to manual synchronization or switch platforms.
- No Admin Configuration: There are no backend controls to prevent this retirement; the change will be applied automatically by Microsoft.
#### Action Required
- User Communication: Notify users who frequently use OWA about the upcoming retirement of these features to manage expectations and reduce support requests.
- Documentation Updates: Update internal IT knowledge base articles, training materials, and helpdesk scripts regarding Outlook Web App capabilities.
- Promote Alternative Solutions: Direct users who require multi-account and consolidated calendar support to use the Outlook desktop applications (Windows or Mac), which will continue to support these functionalities.
- Helpdesk Preparation: Ensure support staff are aware that this is a service-wide retirement and cannot be “fixed” via account settings or administrative overrides.
Microsoft Official Update
Service: N/A
Category: planForChange
Severity: normal
[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.
