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Preventing Stationary/Theme Changes via GPO in Outlook 2016

January 30th, 2024 No comments

This is only covered partially in other places. To prevent changing themes/stationary and also reverting existing themes/stationary push all four of the below keys via GPO.

Create REG_SZ values

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\MailSettings
“NewStationery”=””
“NewTheme”=””

HKEY_CURRENT_USER\Software\Policies\Microsoft\office\16.0\common\mailsettings
“NewStationery”=””
“NewTheme”=””

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