Application.IsTrusted Property (Outlook)

Office 2013 and later
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Returns a Boolean to indicate if an add-in or external caller is considered trusted by Outlook. Read-only

expression .IsTrusted

expression A variable that represents an Application object.

For out-of-process callers that have instantiated the Application object, IsTrusted always returns False. For Outlook add-ins, IsTrusted returns True if and only if the add-in is considered trusted by Outlook.

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