XCLN - MAPIResolveName Does Not Properly Handle Multi-Byte Character Set (DBCS) Strings

ID: Q216049

The information in this article applies to:

SYMPTOMS

A simple Messaging Application Program Interface (MAPI) application passes a Double-Byte Character Set (DBCS) string to the MAPI call MAPIResolveName(). MAPIResolveName fails when a two-byte DBCS character contains 0x5b or 0x5c as one of its bytes.


CAUSE

A supporting routine used by MAPIResolveName() was not written to properly handle DBCS strings, and mistakenly interprets the bytes 0x5b and 0x5c as '[' and '\' respectively.


RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Microsoft Exchange Server version 5.5 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp
The English version of this fix should have the following file attributes or later:

Component: MAPI

File name Version
MAPI32.DLL 5.5.2535.0



NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:
Q154871 Determining If You Are Eligible for No-Charge Technical Support


STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server 5.5.

Additional query words: 


Keywords          : 
Version           : winnt:5.5
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: August 3, 1999