InsightsOperations and lifecycle

New Outlook: You have an extra year – use it

Microsoft has postponed the automatic switch to new Outlook for enterprise customers until March 2027.

· 2 min read

New timeline

The opt-out phase for new Outlook for Windows in enterprise environments now starts in March 2027 instead of April 2026. From that point, new Outlook will be on by default, but you can still turn it off. The final cutover, when classic Outlook is removed, will come no sooner than one year after that.

Microsoft has committed to supporting classic Outlook until at least 2029.

What's holding up the switch?

The most common obstacle is add-ins and integrations that only work in classic Outlook. New features – especially AI features – are coming mainly to new Outlook.

What we recommend

  • Inventory the add-ins and integrations you use in Outlook
  • Test new Outlook with a pilot group
  • Use the admin-controlled migration policy to set the pace

How we can help

IT operations with iqonic CareOne partner for your entire Microsoft environment.Microsoft 365The modern workplace – set up right.

Wondering what this means for your organization? Let's talk.

Request a meeting →

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