The free/busy information about an Exchange Server 2007 user is not displayed

Article ID: 976025 - View products that this article applies to.
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SYMPTOMS

In a Microsoft Exchange Server 2007 environment, you find that the free/busy information about an user is not displayed. Additionally, you set the Exchange Server Diagnostics Logging level for the Availability Service to one of the following three levels
  • Lowest
  • Low
  • Medium
When you do this, the following event is logged in the Application log:


Event ID : 4013
Raw Event ID : 4013
Category : None
Source : MSExchange Availability
Type : Error
Message : Process <ID>[w3wp.exe:/LM/W3SVC/1/ROOT/EWS-<ID>]: Calendar query failed for mailbox <user name>SMTP:<smtp address>. The returned exception is as follows: Microsoft.Exchange.InfoWorker.Common.Availability.Win32InteropException: A Win32 function returned an error. The inner exception may have more details. ---> System.ArgumentOutOfRangeException: Non-negative number required. Parameter name: count at System.IO.BinaryReader.ReadBytes(Int32 count) at Microsoft.Exchange.Data.Storage.InternalRecurrence.ReadExceptionInfoSubstring(Binary Reader blobReader, Int32 usingCodePageId) at Microsoft.Exchange.Data.Storage.InternalRecurrence.ParseExceptionInfo(BinaryReader blobReader, RecurrenceVersion recurrenceVersion, Int32 usingCodePageId) at Microsoft.Exchange.Data.Storage.InternalRecurrence.InternalParse(Byte[] blob, Item masterItem, VersionedId masterItemId, ExchangeTimeZone organizerTimeZone, ExchangeTimeZone userTimeZone, Boolean expectNoException, Int32 usingCodePageId) at Microsoft.Exchange.Data.Storage.InternalRecurrence.InternalParse(Byte[] blob, VersionedId masterItemId, ExchangeTimeZone organizerTimeZone, ExchangeTimeZone userTimeZone, Int32 usingCodePageId) at Microsoft.Exchange.Data.Storage.InternalRecurrence.GetRecurrence(VersionedId versionedId, StoreSession session, Byte[] recurrenceBlob, Byte[] organizerTimeZoneBlob, Int32 usingCodePageId) at Microsoft.Exchange.Data.Storage.CalendarFolder.GetRecurringCalendarItems(DateTime startTime, DateTime endTime, PropertyDefinition[] dataColumns) at Microsoft.Exchange.Data.Storage.CalendarFolder.GetCalendarView(DateTime startTime, DateTime endTime, QueryFilter filter, SortBy[] sortColumns, PropertyDefinition[] dataColumns) at Microsoft.Exchange.InfoWorker.Common.Availability.CalendarQuery.InternalGetCalendarData(EmailAddress emailAddress, MailboxSession session) at Microsoft.Exchange.InfoWorker.Common.Availability.CalendarQuery.GetCalendarData(EmailAddress emailAddress)

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CAUSE

The error is caused by certain internal functions in Exchange Server 2007 that throw a wrong exception for a corrupted calendar item. Therefore, the free/busy information for certain users is not displayed.
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RESOLUTION

To resolve this problem, install the following update rollup:
972076
(http://support.microsoft.com/kb/972076/ )
Description of Update Rollup 2 for Exchange Server 2007 Service Pack 2
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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MORE INFORMATION

For more information about how to change Logging Levels for Exchange Processes, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb201670.aspx
(http://technet.microsoft.com/en-us/library/bb201670.aspx)
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Properties

Article ID: 976025 - Last Review: January 22, 2010 - Revision: 1.0
APPLIES TO
  • Microsoft Exchange Server 2007 Service Pack 2, when used with:
    • Microsoft Exchange Server 2007 Enterprise Edition
    • Microsoft Exchange Server 2007 Standard Edition
Keywords: 
kbsurveynew kbhotfixrollup kbexpertiseinter kbfix kbqfe KB976025
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