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Office Message Encryption - Disable Encrypt Button in Outlook

Peters, Marvin 21 Reputation points
2020-11-27T15:02:30.227+00:00

Hi eyeryone,

maybe someone know this. FYI, we are using M365 with EXO.

Can I disable the encrypt button in my installed Outlook application as it is shown in the following screenshot?

43335-image.png

I know that it is possible in OWA, but I can´t find the option for the local Outlook. I think, maybe it is possible with a registry key?
In my situation, it is not enough to disable the "Encrypt only" or "Do not forward" Button, because than there are only greyed out.

The goal is to disable this button for every user (via GPO for example), so the user must use a AIP Label to protect emails.

Thanks a lot and kind regards
Marvin Peters

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. David Garza 1 Reputation point
    2024-03-22T16:36:12.8233333+00:00

    @Brandon Hough Here is the GPO used to grey out Encrypt-Only option in Outlook, we are GCC Semi-Annual Channel v2308. We had to make changes to Outlook Web Access as well to not allow Client Encryption:

    Action: Update

    Properties: Hive HKEY_CURRENT_USER

    Key path: Software\Microsoft\Office\16.0\Common\DRM

    Value name: DisableEO

    Value type: REG_DWORD

    Value data: 0x1 (1) Encrypt-Only

  2. David Garza 1 Reputation point
    2024-03-22T16:44:41.33+00:00

    See previous post .

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