PidLidTaskDueDate Canonical Property

Applies to: Outlook 2013 | Outlook 2016

Represents the date when the user expects to complete the task.

Property Value
Associated properties:
Property set:
Long ID (LID):
Data type:


The task has no due date if this property is unset or set to 0x5AE980E0 (1,525,252,320). However, a due date is optional only if no start date is indicated in the dispidTaskStartDate (PidLidTaskStartDate) property. If the task has a due date, the value must have a time component of midnight, and the dispidCommonEnd (PidLidCommonEnd) property must also be set. If dispidTaskStartDate has a start date, then the value of the dispidTaskDueDate property must be greater than or equal to the value of dispidTaskStartDate.

Protocol specifications


Provides property set definitions and references to related Exchange Server protocol specifications.


Defines several objects that model the electronic equivalent of tasks, task assignments, and task updates.


Specifies the properties and the interaction model for email and other object reminders.

Header files


Provides data type definitions.

See also

MAPI Properties

MAPI Canonical Properties

Mapping Canonical Property Names to MAPI Names

Mapping MAPI Names to Canonical Property Names