In Microsoft 365 GCC and GCC High environments, mobile add-ins are disabled by default. Even if they are deployed through the Microsoft 365 Integrated Apps portal, these add-ins will not load on a mobile device.
On Android, the Add-ins menu option is missing from the app’s settings. On iOS, attempting to access add-ins displays the message: “This account does not support Add-ins.”
To enable Outlook mobile add-ins, you’ll need to update the Microsoft 365 tenant configuration using Exchange Online PowerShell.
Steps:
Connect to Exchange Online PowerShell and sign in with a Global Administrator account.
Microsoft 365 GCC High
Connect-ExchangeOnline -ExchangeEnvironmentName O365USGovGCCHighMicrosoft 365 GCC
Connect-ExchangeOnlineAfter establishing the connection, run the following command to allow mobile add-ins:
Set-OrganizationConfig -OutlookMobileGCCRestrictionsEnabled $falseConfirm the setting is disabled:
Get-OrganizationConfig | fl OutlookMobileGCCRestrictionsEnabledA value of “False” indicates that mobile add-ins are enabled:
Please reference Using Outlook for iOS and Android in the Government Community Cloud in Exchange Online for additional information.
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