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Using the GetFreeBusy function against a Exchange Server mailbox returns the following error:
Run-time error '-2147221233(8004010f)':
[Collaboration Data Objects - [MAPI_E_NOT_FOUND(8004010F)]]
The mailbox that you are accessing using Collaboration Data Objects (1.1, 1.2, 1.21) has not been logged into with a mail client yet, therefore no Free/Busy information has been created for this mailbox.
Here are three workarounds to this problem:
The GetFreeBusy method returns a string representing the availability of the messaging user for a meeting over a specified period of time. The returned string length equals the number of time slots between StartTime and EndTime. Each character in the string is the ASCII representation of the appropriate type library constant indicating the messaging user's availability during a time slot:
ASCII Character Meaning --------------------- "0" CdoFree "1" CdoTentative "2" CdoBusy "3" CdoOutOfOffice
Article ID: 183250 - Last Review: January 11, 2015 - Revision: 3.0