2.2.133 [RFC5546] Section 3.4.5 CANCEL


The specification describes the use of CANCEL with VTODO components.

Microsoft Office Outlook 2007, Microsoft Outlook 2010, Microsoft Outlook 2013, Microsoft Outlook 2016, Microsoft Outlook 2019

Outlook does not export VTODO components. All Outlook ignores VTODO components on import. For CANCEL-type iCalendar objects, the import fails.