Do not show "Try the new Outlook" toggle for all our Windows devices

Hi,

Thank you for posting in Microsoft Q&A forum.

1,We can use Intune configuration policy to hide the "Try the new Outlook" toggle . Go to Configuration Profiles -> Create profile -> Windows 10 -> Administrative Templates -> User Configuration ->Hide the “Try the new Outlook” toggle in Outlook . As shown below.

Hide New Outlook Toggle in Outlook Desktop App using Intune

2,We can also use the registry to disable the New Outlook toggle in Outlook Desktop and deploy below registry to the Windows devices.

This value hides the Try the new Outlook" toggle in Outlook Desktop:

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\General]

"HideNewOutlookToggle"=dword:00000001

Enable or disable employee access to the new Outlook for Windows

https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/outlook-on-the-web/enable-disable-employee-access-new-outlook#use-the-registry-to-enable-or-disable-the-new-outlook-toggle-in-outlook-desktop

Thanks for your time. Have a nice day!

Best regards,

Simon

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Hi,

Just checking in to see if there is any update. May we know the current status of the question? If there is any other assistance we can provide, please feel free to let us know, we will do our best to help you.

Thanks and regards,

Simon

Never in a million years would I willingly give up .pst files, as I have nearly 30 years of emails stored in them. I'd really like to disable this garbage, lest I accidentally blow up my world.

Make certain to create a set registry flag in group policy to prevent the auto-migration in Jan -> February 2025, from the working Classic Outlook to the partially-functional New-Outlook.

Microsoft have decided that they can and will break the workflows of any organisation that makes heavy use of Shared folders for collaboration, or on-premise Exchange.

Microsoft are too contemptuous of its subscribers to even create a group policy to manage this advance of the breakage they will inflict.

https://learn.microsoft.com/en-us/microsoft-365-apps/outlook/get-started/control-install#block-new-outlook-preinstall-on-windows

"
Starting in January 2025, users with Microsoft 365 Business Standard and Premium licenses are automatically migrated from the classic Outlook for Windows to new Outlook for Windows. Users receive in-app notifications before the migration and can opt out of the automatic migration through Outlook Options > General.
"

The Registry edit mentioned above works! The "Try the New Outlook" toggle disappeared! Pasted instructions below so you don't have to search:

2,We can also use the registry to disable the New Outlook toggle in Outlook Desktop and deploy below registry to the Windows devices.

This value hides the Try the new Outlook" toggle in Outlook Desktop:

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\General]

"HideNewOutlookToggle"=dword:00000001