Sets the language and regional settings (locale) for a mailbox.
The Set-CIPPMailboxLocale function configures the language and regional settings (locale) for a specified mailbox in the customer's tenant. This affects the language used in Outlook Web App, date and time formats, and other regional settings for the mailbox.
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Specifies the customer tenant ID. This parameter is mandatory.
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Specifies the User Principal Name of the mailbox owner. This parameter is mandatory.
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Specifies the locale/language code to set (e.g., "en-US" for English (United States), "fr-FR" for French (France), "de-DE" for German (Germany)). This parameter is mandatory.
PS > Set-CIPPMailboxLocale -CustomerTenantID "contoso.onmicrosoft.com" -UserPrincipalName "john.doe@contoso.com" -Locale "en-US"
Sets the mailbox locale to English (United States) for john.doe@contoso.com.PS > Set-CIPPMailboxLocale -CustomerTenantID "contoso.onmicrosoft.com" -UserPrincipalName "jean.dupont@contoso.com" -Locale "fr-FR"
Sets the mailbox locale to French (France) for jean.dupont@contoso.com.