XCLN: NT Client Generates Application Error, Exception

• Microsoft Exchange Windows NT client, version 5.0

SYMPTOMS

The Microsoft Exchange Windows NT client, version 5.0 may generate an access violation when manipulating a message.

CAUSE

The Windows system can return a NULL pointer to a MENU ID that the client will attempt to access. This circumstance is dependant on strict timing and requires a number of events to occur in such an order that the MENU ID of the object being accessed has since been released by Windows.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Windows NT client, version 5.0. A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.

MORE INFORMATION

The problem can be reproduced only on a random basis. The following is an example of the commands used to reproduce the problem.

1. User1 sends a message with an Word attachment to User2.

1. User2 closes the attachment.

2. User2 atempts to reply to User1.

3. An application error will occur and if the system has the symbols loaded, the DrWtsn32.log will indicate the last function accessed was NoteWndMenuSelect.