Outlook - Disable New Outlook Migration and Toggle

Description

This Immy script configures Outlook registry settings for all currently loaded Windows user profiles to control the New Outlook experience.

It sets the following registry values to 1:

• NewOutlookMigrationUserSetting — Configures the user's New Outlook migration setting.
• HideNewOutlookToggle — Hides the New Outlook toggle in Outlook.

Task Configuration

Changelog

2026-09-07

• Initial version of the document