ExchangeServiceBase.UseDefaultCredentials Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets or sets a value that indicates whether the credentials of the user who is currently logged on to Windows should be used to authenticate with Exchange Web Services (EWS).
public:
property bool UseDefaultCredentials { bool get(); void set(bool value); };public bool UseDefaultCredentials { get; set; }Public Property UseDefaultCredentials As BooleanProperty Value
true if the credentials of the currently logged-on user should be used; otherwise, false.
Remarks
Setting the UseDefaultCredentials property to true automatically sets the Credentials property to a null reference (Nothing in Visual Basic).
You cannot use the default credentials of the logged on user if the user’s mailbox is hosted in Exchange Online or Exchange Online as part of Office 365. Instead, use the Credentials property to set the user’s credentials. The user’s credentials must be in user principal name (UPN) form for Exchange Online.