Can we get an official answer on single instance appointments and what to tell our users?


Q: Can we get an official answer on single instance appointments and what to tell our users?  I was told my MS Support that you should use the /recurringonly switch all the time because it will change all the single instance appointments ever those outside the ext DST
A: From http://support.microsoft.com/gp/dst_topissues#a4: Special considerations for single-instance calendar items: Single-instance calendar items contain no time zone information so it is impossible for the Outlook Time Zone Data Update tool to tell whether or not they need updating (whereas recurring calendar items have the time zone information embedded).


As a result, if the user has created single-instance calendar items in the extended DST period after applying the Windows operating system patch that updates the time zone definitions but before running the Outlook Time Zone Data Update tool then they will need to be careful to tell the tool not to update them by un-selecting those meetings from the list.

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