IMAPISync : SynchronizeInBackground

Office 2013 and later

Last modified: June 26, 2012

Applies to: Outlook

Initiates a synchronization. This method is called by Microsoft Outlook 2010 and Microsoft Outlook 2013 and implemented by message store providers.

HRESULT SynchronizeInBackground (
  PMAPISIB psibpb


Informs the provider of what will be synchronized and gives access to interfaces that can be used during the synchronization. It is a MAPISIB structure.


The call succeeded and has returned the expected value or values.