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XCLN: Attachments with Long Filenames Crash Client

The information in this article applies to:

Microsoft Exchange Windows NT client, version 5.0
Microsoft Exchange Windows 95/98 client, version 5.0
Microsoft Outlook for Macintosh, Exchange Server Edition, version 8.0

SYMPTOMS

When you receive an attachment from the Internet with a long file name, your Exchange or Outlook client may crash with the following symptoms.

Exchange 5.0 Client

When you try to open or save the attachment, a Dr. Watson error message will be displayed, and then the computer will crash.

Outlook for Macintosh Client

When you try to open or save the attachment, the following error message will be displayed:

The Application "unknown" has unexpectedly quit, because an error of type 2 occurred.

CAUSE

Both the Exchange Server and Outlook clients incorrectly handle long filenames.

RESOLUTION

Exchange 5.0 Client

A supported fix that corrects this problem is now available from Microsoft, but 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 5.0 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: Exchange 5.0 Client

   File Name     Version
   -------------------------
   Wmsui32.dll   5.0.1461.67

Outlook for Macintosh Client

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For more information, please see the following article in the Microsoft Knowledge Base:

Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or later:

Component: Outlook for Macintosh Client

   Version
   -------
   8.01

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

Keywords          : exc55sp2fix 
Version           : MACINTOSH:8.0;WINDOWS:5.0;WinNT:5.0
Platform          : MACINTOSH WINDOWS winnt 
Issue type        : kbbug