Microsoft KB Archive/885854

= The Microsoft Exchange Information Store service crashes in the ExAIFromCAI function in Exchange Server 5.5 =

Article ID: 885854

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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SYMPTOMS
The Microsoft Exchange Information Store service (Store.exe) may unexpectedly quit on a computer that is running Microsoft Exchange Server 5.5. In this scenario, if you have the correct symbols installed and if you view the contents of the User.dmp file or the Drwtsn32.log file, you determine that the the Microsoft Exchange Information Store service process quits in the EcAIFromCAI function of the Microsoft Exchange Information Store service.

If you move the mailbox that is associated with this stack output to a different Exchange computer, you may no longer experience this problem.



CAUSE
This problem occurs if an incorrect byte count is calculated and then permitted to be used in the EcAIFromCAI function call. This function call copies memory by using that byte count. If the byte count is incorrect, information may be copied to a location that does not permit write access. Therefore, an access violation may occur in the the Microsoft Exchange Information Store service process.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
Because of file dependencies, this hotfix requires Microsoft Exchange Server 5.5 Service Pack 4 (SP4).

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 How to obtain the latest Exchange Server 5.5 service pack

Restart requirement
You do not have to restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version            Size    File name --  28-Oct-2004  00:31  5.5.2658.23       496,400  Mdbmsg.dll 28-Oct-2004 18:59  5.5.2658.23     2,635,536  Store.exe



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

817903 New naming schema for Exchange Server software update packages

Additional query words: XADM Store.exe

Keywords: kbexchange550presp5fix kbbug kbfix kbqfe kbhotfixserver KB885854

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