Maincat wrote:

Hi,

Outlook 2003 (SP3, all updates) goes along happily, then just closes down by
itself. This behaviour seems to have happened since the Microsoft April
security updates, but that might not have anything to do with it.

What happens if you load Outlook in its safe mode ("outlook.exe /safe")
so no add-ons get loaded with it?

Any errors listed in the Event Viewer logs at the time of the crash?

Is Outlook actually killed or did it minimize? Check the Processes tab
in Task Manager when it disappears.