Assume that you create and save a Calendar item in a mailbox by using an Exchange Web Services (EWS)-based application in a Microsoft Exchange Server 2013 environment. When you try to sync your free/busy information on an Exchange ActiveSync (EAS) device, the synchronization fails.
To resolve this issue, install the following cumulative update:
2961810 Cumulative Update 6 for Exchange Server 2013
This issue occurs because EWS sets the LegacyFreeBusyStatus element to the NoData text value, and this value is not defined in EAS.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the LegacyFreeBusyStatus element, go to the following Microsoft website:
General information about the LegacyFreeBusyStatus elementFor more information about the NoData value, go to the following Microsoft website: