PowerShell Command to block new Outlook Version Toggle not working.

Nik West 20 Reputation points
2023-06-02T18:43:42.83+00:00

https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/outlook-on-the-web/enable-disable-employee-access-new-outlook

When using the above PS on a single mailbox it seems to work for about 24 hours then the button comes back. Any reason why this should not be working?

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Yuki Sun-MSFT 41,016 Reputation points
    2023-06-05T03:19:41.4766667+00:00

    Hi @Nik West ,

    Add the registry below on the user's machine so that the toggle can be hide:
    (Important: Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.)

    Windows Registry Editor Version 5.00
    [HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\General]
    "HideNewOutlookToggle"=dword:00000001
    

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