Microsoft KB Archive/840813

= A recipient cannot open a file attachment when an e-mail message is sent to an Exchange Server 5.5 computer =

Article ID: 840813

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
When a Microsoft Exchange Server 5.5 computer receives an e-mail message that contains a file attachment, the recipient of the message cannot open the file attachment.



CAUSE
This problem occurs if the file attachment has a long file name and the file name contains double-byte character set (DBCS) characters. When the Exchange Server 5.5 computer extracts the headers from a message that has a file attachment with a long file name that contains DBCS characters, if a header has been folded, the Exchange Server 5.5 computer adds lines to the header. This corrupts the header, and the file attachment cannot be opened by the recipient.



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

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

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

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 update requires Microsoft Exchange Server 5.5 Service Pack 4.

Restart requirement
You must 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) 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 --  10-May-2004  04:42  5.5.2658.8        496,400  Mdbmsg.dll 10-May-2004 05:24  5.5.2658.8      2,635,024  Store.exe



WORKAROUND
To work around this problem, the file attachment can be re-sent with a different file name that does not contain DBCS characters.



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

Keywords: kbexchange550presp5fix kbbug kbfix kbqfe kbhotfixserver KB840813

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